In European bestiaries and legends, a basilisk ( or ) is a legendary reptile reputed to be a serpent king, who can cause death with a single glance. According to the "Naturalis Historia" of Pliny the Elder, the basilisk of Cyrene is a small snake, "being not more than twelve fingers in length", that is so venomous, it leaves a wide trail of deadly venom in its wake, and its gaze is likewise lethal.The basilisk's weakness is the odor of the weasel, which, according to Pliny, was thrown into the basilisk's hole, recognizable because some of the surrounding shrubs and grass had been scorched by its presence. It is possible that the legend of the basilisk and its association with the weasel in Europe was inspired by accounts of certain species of Asiatic snakes (such as the king cobra) and their natural predator, the mongoose.


Agama (from Sranan Tongo meaning "lizard") is a genus of small-to-moderate-sized, long-tailed, insectivorous Old World lizards. The genus "Agama" includes at least 37 species in Africa, especially sub-Saharan Africa, where most regions are home to at least one species. Eurasian agamids are largely assigned to genus "Laudakia". The various species differ in size, ranging from about 12 to 30 (cm) in length, when fully grown. Their colour also differs between species, between genders, and according to mood; for example, a dominant male in display mode is far brighter than when it has been caught, beaten by another male, or otherwise alarmed. Females tend to be less colourful than the males of the species. According to species, agamas live in forest, in bush, among rocks and on crags, but where their habitat has been cleared, or simply occupied by humans, some species also adapt to life in villages and compounds, for example inside the thatch of huts and other sheltering crevices. Agamids' hind legs generally are long and powerful; and the lizards can run and leap swiftly when alarmed.Agamas are diurnal, active during the day. They can tolerate higher temperatures than most reptiles, but when temperatures approach 38 °C (100 °F) they generally shelter in the shade. Males frequently threaten each other by nodding, weaving, and displaying their brightest colours to establish dominance. If that is insufficient, they lash their tails and threaten each other with open jaws. The jaws are very powerful, and older males commonly have damaged tails as souvenirs of past combat. Females may sometimes chase and fight one another, and hatchlings mimic the adults' behaviour.Agamas are mainly insectivorous, hunting prey by sight and snatching it opportunistically. Their incisor-like front teeth and powerful jaws are adapted to dealing with quite large, hard prey. They also may eat eggs of other lizards, and sometimes feed on vegetable matter, such as suitable grass, berries, and seeds.Though not formally polygamous, dominant males commonly accommodate several females at a time in their territory. During courtship, and also when asserting his territory, the male bobs his head in display; this gives rise to some of the common names, such as Afrikaans "koggelmander" (literally, "little mocking man"). Females occasionally initiate courtship by offering their hindquarters to the male and provoking him to catch her. Typically the breeding season is timed for eggs to be laid during the season after the rains. Eggs are laid in clutches of up to 12, depending on species and the size of the female.


An alligator lizard is any one of various species of lizards in the family Anguidae that have some shared characteristics.The term may specifically refer to:Species of the genus "Elgaria": Northern alligator lizard ("Elgaria coerulea") Madrean alligator lizard ("Elgaria kingii" ) Southern alligator lizard ("Elgaria multicarinata") Panamint alligator lizard ("Elgaria panamintina") Pygmy alligator lizard ("Elgaria parva") San Lucan alligator lizard ("Elgaria paucicarinata") Central Peninsular alligator lizard ("Elgaria velazquezi" )Species of the genus "Gerrhonotus": Farr's alligator lizard ("Gerrhonotus farri" ) Texas alligator lizard ("Gerrhonotus infernalis") Smooth-headed alligator lizard ("Gerrhonotus liocephalus") Lugo's alligator lizard ("Gerrhonotus lugoi" )Species of the genus "Abronia" (arboreal alligator lizards)


The Mexican beaded lizard ("Heloderma horridum") is a species of lizard in the family Helodermatidae, one of the two species of venomous beaded lizards found principally in Mexico and southern Guatemala. It and the other member of the same genus, the Gila monster ("Heloderma suspectum"), are the only lizards known to have evolved an overt venom delivery system. The Mexican beaded lizard is larger than the Gila monster, with duller coloration, black with yellowish bands. As it is a specialized predator that feeds primarily upon eggs, the primary use of its venom is still a source of debate among scientists. This venom has been found to contain several enzymes useful for manufacturing drugs in the treatment of diabetes, and research on the pharmacological use of its venom is ongoing.Threatened throughout its range by overcollection and habitat loss, it is a CITES protected species. The Guatemalan beaded lizard ("H. charlesbogerti") is one of the rarest lizards in the world, with a wild population of fewer than 200.


The European green lizard ("Lacerta viridis") is a large lizard distributed across European midlatitudes from Slovenia and eastern Austria to as far east as the Black Sea coasts of Ukraine and Turkey. It is often seen sunning on rocks or lawns, or sheltering amongst bushes.


Hognose snake is a common name for several unrelated species. 2 colubrid snake genus and 1 lamprophiidae genus with upturned snouts. They include  genera:

Heterodon, which occur mainly in the United States and northern Mexico
Leioheterodon, the hognose snakes native to Madagascar
Lystrophis, the South American hognose snakes.The North American Heterodon species are known for their habit of thanatosis: playing dead when threatened.


Kingsnakes are colubrid New World members of the genus Lampropeltis, which includes 26 species. Among these, about 45 subspecies are recognized. They are nonvenomous and ophiophagous in diet.


The Acrochordidae, commonly known as wart snakes, Java wart snakes, file snakes, elephant trunk snakes, or dogface snakes are a monogeneric family created for the genus Acrochordus. This is a group of primitive aquatic snakes found in Australia and tropical Asia. Currently, three species are recognized.


Mambas are fast moving highly venomous snakes of the genus Dendroaspis (which literally means "tree asp") in the family Elapidae. Four extant species are recognised currently; three of those four species are essentially arboreal and green in colour, whereas the black mamba, "Dendroaspis polylepis", is largely terrestrial and generally brown or grey in colour. All are native to various regions in sub-Saharan Africa and all are feared throughout their ranges, especially the black mamba. In Africa there are many legends and stories about mambas.


Cerastes cerastes, commonly known as the Saharan horned viper or the desert horned viper, is a venomous species of viper native to the deserts of Northern Africa and parts of the Arabian Peninsula and Levant. It is often easily recognized by the presence of a pair of supraocular "horns", although hornless individuals do occur. Three subspecies have been described.


The Crotalinae, commonly known as pit vipers, crotaline snakes (from "krotalon" castanet), or pit adders, are a subfamily of vipers found in Eurasia and the Americas. Like all other vipers, they are venomous. They are distinguished by the presence of a heat-sensing pit organ located between the eye and the nostril on both sides of the head. Currently, 23 genera and 155 species are recognized: These are also the only viperids found in the Americas. The groups of snakes represented here include rattlesnakes, lanceheads, and Asian pit vipers. The type genus for this subfamily is "Crotalus", of which the type species is the timber rattlesnake, "C. horridus".These snakes range in size from the diminutive hump-nosed viper, "Hypnale hypnale", that grows to a typical total length (including tail) of only 30 - 45 (cm), to the bushmaster, "Lachesis muta", a species known to reach a maximum total length of 3.65 (m) in length.This subfamily is unique in that all member species share a common characteristic – a deep pit, or fossa, in the loreal area between the eye and the nostril on either side of the head. These loreal pits are the external openings to a pair of extremely sensitive infrared-detecting organs, which in effect give the snakes a sixth sense to help them find and perhaps even judge the size of the small, warm-blooded prey on which they feed. The pit organ is complex in structure and is similar to the thermoreceptive labial pits found in boas and pythons. It is deep and located in a maxillary cavity. The membrane is like an eardrum that divides the pit into two sections of unequal size, with the larger of the two facing forwards and exposed to the environment. The two sections are connected via a narrow tube, or duct, that can be opened or closed by a group of surrounding muscles. By controlling this tube, the snake can balance the air pressure on either side of the membrane. The membrane has many nerve endings packed with mitochondria. Succinic dehydrogenase, lactic dehydrogenase, adenosine triphosphate, monoamine oxidase, generalized esterases, and acetylcholine esterase have also been found in it. When prey comes into range, infrared radiation falling onto the membrane allows the snake to determine its direction. Having one of these organs on either side of the head produces a stereo effect that indicates distance, as well as direction. Experiments have shown, when deprived of their senses of sight and smell, these snakes can strike accurately at moving objects less than 0.2 (C-change) warmer than the background. The paired pit organs provide the snake with thermal rangefinder capabilities. Clearly, these organs are of great value to a predator that hunts at night, as well as for avoiding the snake’s own predators.Among vipers, these snakes are also unique in that they have a specialized muscle, called the muscularis pterigoidius glandulae, between the venom gland and the head of the ectopterygoid. Contraction of this muscle, together with that of the muscularis compressor glandulae, forces venom out of the gland.


The eastern diamondback rattlesnake (Crotalus adamanteus) is a species of pit viper in the family Viperidae. The species is endemic to the Southeastern United States. It is one of the heaviest venomous snakes in the Americas and the largest rattlesnake. No subspecies are recognized.


Scorpions are predatory arachnids of the order Scorpiones. They have eight legs, and are easily recognized by a pair of grasping pincers and a narrow, segmented tail, often carried in a characteristic forward curve over the back and always ending with a stinger. The evolutionary history of scorpions goes back 435 million years. They mainly live in deserts but have adapted to a wide range of environmental conditions, and can be found on all continents except Antarctica. There are over 2,500 described species, with 22 extant (living) families recognized to date. Their taxonomy is being revised to account for 21st-century genomic studies.Scorpions primarily prey on insects and other invertebrates, but some species hunt vertebrates. They use their pincers to restrain and kill prey, or to prevent their own predation. The venomous sting is used for offense and defense. During courtship, the male and female grasp each other's pincers and dance while he tries to move her onto his sperm packet. All known species give live birth and the female cares for the young as their exoskeletons harden, transporting them on her back. The exoskeleton contains fluorescent chemicals and glows under ultraviolet light.The vast majority of species do not seriously threaten humans, and healthy adults usually do not need medical treatment after a sting. About 25 species (fewer than one percent) have venom capable of killing a human, which happens frequently in the parts of the world where they live, primarily where access to medical treatment is unlikely.Scorpions appear in art, folklore, mythology, and commercial brands. Scorpion motifs are woven into kilim carpets for protection from their sting. Scorpius is the name of a constellation; the corresponding astrological sign is Scorpio. A classical myth about Scorpius tells how the giant scorpion and its enemy Orion became constellations on opposite sides of the sky.


Wolf spiders are members of the family Lycosidae (). They are robust and agile hunters with excellent eyesight. They live mostly in solitude, hunt alone, and do not spin webs. Some are opportunistic hunters, pouncing upon prey as they find it or chasing it over short distances; others wait for passing prey in or near the mouth of a burrow.Wolf spiders resemble nursery web spiders (family Pisauridae), but wolf spiders carry their egg sacs by attaching them to their spinnerets, while the Pisauridae carry their egg sacs with their chelicerae and pedipalps. Two of the wolf spider's eight eyes are large and prominent; this distinguishes them from nursery web spiders, whose eyes are all of roughly equal size. This can also help distinguish them from the similar-looking grass spiders.


Horseshoe crabs are marine and brackish water arthropods of the family Limulidae and the only living members of the order Xiphosura. Despite their name, they are not true crabs or crustaceans; they are chelicerates, most closely related to arachnids, such as spiders and scorpions.Horseshoe crabs live primarily in and around shallow coastal waters on soft, sandy or muddy bottoms. They are generally found in the intertidal zone at spring high tides. They are eaten in some parts of Asia, and used as fishing bait, in fertilizer and in science (especially "Limulus" amebocyte lysate). In recent years, population declines have occurred as a consequence of coastal habitat destruction and overharvesting. Tetrodotoxin may be present in one horseshoe crab species, "Carcinoscorpius rotundicauda".Fossil records for horseshoe crabs extend back as far as 480 million years ago, with extant forms being living fossils. A 2019 molecular analysis places them as the sister group of Ricinulei within Arachnida.


Junglefowl are the only five living species of bird from the genus Gallus in the bird order Galliformes, and occur in parts of South and Southeast Asia. They diverged from their common ancestor about 4–6 million years ago.Although originating in Asia, remains of junglefowl bones have also been found in regions of Chile, which date back to 1321–1407 CE, providing evidence of possible Polynesian migration through the Pacific Ocean.These are large birds, with colourful plumage in males, but are nevertheless difficult to see in the dense vegetation they inhabit.As with many birds in the pheasant family, the male takes no part in the incubation of the egg or rearing of the precocial young. These duties are performed by the drab and well-camouflaged female. Females and males do not form pair bonds; instead, the species has a polygynandrous mating system in which each female will usually mate with several males. Aggressive social hierarchies exist among both females and males, from which the term "pecking order" originates.The junglefowl are omnivorous, eating a variety of leaves, plant matter, invertebrates such as slugs and insects, and occasionally small mice and frogs.One of the species in this genus, the red junglefowl, is of historical importance as the ancestor of the chicken, the only domesticated species. Although the grey junglefowl, Sri Lankan junglefowl and green junglefowl are likely to have also been involved.The Sri Lankan junglefowl is the national bird of Sri Lanka.


Orpington is a town and area in south east London, England, within the London Borough of Bromley. It is 13.4 miles (21.6 km) south east of Charing Cross.On the south-eastern edge of the Greater London Built-up Area, it is south of St Mary Cray, west of Ramsden, north of Goddington and Green Street Green, and east of Crofton and Broom Hill. Orpington is covered by the BR postcode area.It is identified in the London Plan as one of 35 major centres in Greater London.


Moorhens—sometimes called marsh hens—are medium-sized water birds that are members of the rail family (Rallidae). Most species are placed in the genus Gallinula, Latin for "little hen". They are close relatives of coots. They are often referred to as (black) gallinules. Recently, one of the species of "Gallinula" was found to have enough differences to form a new genus "Paragallinula" with the only species being the lesser moorhen ("Paragallinula angulata").Two species from the Australian region, sometimes separated in , are called "native hens" (also native-hen or nativehen). The native hens differ visually by shorter, thicker and stubbier toes and bills, and longer tails that lack the white signal pattern of typical moorhens.


Tumbler pigeons are varieties of domesticated pigeons descendant from the rock dove that have been selected for their ability to tumble or roll over backwards in flight.This ability has been known in domesticated breeds of pigeons for centuries. In Wendell Levi's book "The Pigeon", reference is made to pigeons with this tumbling ability existing in India before the year 1590. Charles Darwin, in his book "The Origin of Species", makes reference to the Short-faced Tumbler which was a popular breed during his lifetime, and still can be found exhibited at pigeon shows today.There are many different breeds that have descended from the original tumbler stocks. Some of the more popular breeds today include:Armenian TumblerAustralian Performing TumblerAustralian Saddleback TumblerBerlin Short-faced TumblerBerlin Long-faced TumblerBudapest Short-faced TumblerEnglish Long-faced TumblerEnglish Short-faced TumblerFelégyhaza TumblerIndian TumblersIranian Highflying TumblerKomorner TumblerKrasnodar TumblerLimerick TumblersShiraz TumblerVienna long-faced tumblerWest of England Tumbler


The grey parrot (Psittacus erithacus), also known as the Congo grey parrot, Congo African grey parrot or African grey parrot, is an Old World parrot in the family Psittacidae. The Timneh parrot "(Psittacus timneh)" once was identified as a subspecies of the grey parrot, but has since been elevated to a full species.


The bee-eaters are a group of non-passerine birds in the family Meropidae, containing three genera and twenty-seven species. Most species are found in Africa and Asia, with a few in southern Europe, Australia, and New Guinea. They are characterised by richly coloured plumage, slender bodies, and usually elongated central tail feathers. All have long down-turned bills and medium to long wings, which may be pointed or round. Male and female plumages are usually similar.As their name suggests, bee-eaters predominantly eat flying insects, especially bees and wasps, which are caught on the wing from an open perch. The insect's stinger is removed by repeatedly hitting and rubbing the insect on a hard surface. During this process, pressure is applied to the insect's body, thereby discharging most of the venom.Most bee-eaters are gregarious. They form colonies, nesting in burrows tunnelled into vertical sandy banks, often at the side of a river or in flat ground. As they mostly live in colonies, large numbers of nest holes may be seen together. The eggs are white, with typically five to the clutch. Most species are monogamous, and both parents care for their young, sometimes with assistance from related birds in the colony.Bee-eaters may be killed by raptors; their nests are raided by rodents, weasels, martens and snakes, and they can carry various parasites. Some species are adversely affected by human activity or habitat loss, but none meet the International Union for Conservation of Nature's vulnerability criteria, and all are therefore evaluated as "least concern". Their conspicuous appearance means that they have been mentioned by ancient writers and incorporated into mythology.


The motmots or Momotidae are a family of birds in the order coraciiformes, which also includes the kingfishers, bee-eaters and rollers. All extant motmots are restricted to woodland or forests in the Neotropics, and the largest are in Middle America. They have a colourful plumage and a relatively heavy bill. All except the tody motmot have relatively long tails that in some species have a distinctive racket-like tip.


The wrynecks (genus Jynx) are a small but distinctive group of small Old World woodpeckers. "Jynx" is from the Ancient Greek "iunx", the Eurasian wryneck.These birds get their English name from their ability to turn their heads almost 180°. When disturbed at the nest, they use this snake-like head twisting and hissing as a threat display. It has occasionally been called "snake-bird" for that reason.Like the true woodpeckers, wrynecks have large heads, long tongues, which they use to extract their insect prey, and zygodactyl feet, with two toes pointing forward and two backwards,but they lack the stiff tail feathers that the true woodpeckers use when climbing trees, so they are more likely than their relatives to perch on a branch rather than an upright trunk.Their bills are shorter and less dagger-like than in the true woodpeckers, but their chief prey is ants and other insects, which they find in decaying wood or almost bare soil. They reuse woodpecker holes for nesting, rather than making their own holes. The eggs are white, as with many hole nesters.The two species have cryptic plumage, with intricate patterning of greys and browns. The adult moults rapidly between July and September, although some moult continues in its winter quarters. The voice is a nasal woodpecker-like call. Its sound is described as a repetition of the sounds "que, que, que", many times in succession, rapid at first, but gradually slowing and in a continually falling key. This is only heard during a few weeks of its stay in Europe.


Quetzals () are strikingly colored birds in the trogon family. They are found in forests, especially in humid highlands, with the five species from the genus "Pharomachrus" being exclusively Neotropical, while a single species, the eared quetzal, "Euptilotis neoxenus", is found in Mexico and very locally in the southernmost United States. Quetzals are fairly large (all over 32 cm or 13 inches long), slightly bigger than other trogon species. The resplendent quetzal is the national bird of Guatemala because of its vibrant colour.Quetzals have iridescent green or golden-green wing coverts, back, chest and head, with a red belly. They are strongly sexually dimorphic, and parts of the females' plumage are brown or grey. These largely solitary birds feed on fruits, berries, insects and small vertebrates (such as frogs). Even with their famous bright plumage, they can be hard to see in their natural wooded habitats.


Opossums () are members of the marsupial order Didelphimorphia () endemic to the Americas. The largest order of marsupials in the Western Hemisphere, it comprises 120+ species in 19 genera. Opossums originated in South America and entered North America in the Great American Interchange following the connection of North and South America.The Virginia opossum is the only species found in the United States and Canada. It is often simply referred to as an opossum, and in North America it is commonly referred to as a possum (; sometimes rendered as "possums" in written form to indicate the dropped "o"). Possums should not be confused with the Australasian arboreal marsupials of suborder Phalangeriformes that are also called possums because of their resemblance to the Didelphimorphia. The opossum is typically a nonaggressive animal.


A calf (plural calves) is a young domestic cow or bull. Calves are reared to become adult cattle or are slaughtered for their meat, called veal, and hide.
The term calf is also used for some other species. See "Other animals" below.


The pennaceous feather is a type of feather present in most modern birds and in some other species of maniraptoriform dinosaurs.


Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals.The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. Most common interest in hair is focused on hair growth, hair types, and hair care, but hair is also an important biomaterial primarily composed of protein, notably alpha-keratin.Attitudes towards different forms of hair, such as hairstyles and hair removal, vary widely across different cultures and historical periods, but it is often used to indicate a person's personal beliefs or social position, such as their age, sex, or religion.


Sea anemones are a group of predatory marine animals of the order Actiniaria. Because of their colourful appearance, they are named after the anemone, a terrestrial flowering plant. Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia. As cnidarians, sea anemones are related to corals, jellyfish, tube-dwelling anemones, and "Hydra". Unlike jellyfish, sea anemones do not have a medusa stage in their life cycle.A typical sea anemone is a single polyp attached to a hard surface by its base, but some species live in soft sediment, and a few float near the surface of the water. The polyp has a columnar trunk topped by an oral disc with a ring of tentacles and a central mouth. The tentacles can be retracted inside the body cavity or expanded to catch passing prey. They are armed with cnidocytes (stinging cells). In many species, additional nourishment comes from a symbiotic relationship with single-celled dinoflagellates, with zooxanthellae, or with green algae, zoochlorellae, that live within the cells. Some species of sea anemone live in association with hermit crabs, small fish, or other animals to their mutual benefit.Sea anemones breed by liberating sperm and eggs through the mouth into the sea. The resulting fertilized eggs develop into planula larvae which, after being planktonic for a while, settle on the seabed and develop directly into juvenile polyps. Sea anemones also breed asexually, by breaking in half or into smaller pieces which regenerate into polyps. Sea anemones are sometimes kept in reef aquariums; the global trade in marine ornamentals for this purpose is expanding and threatens sea anemone populations in some localities, as the trade depends on collection from the wild.


Brain coral is a common name given to various corals in the families Mussidae and Merulinidae, so called due to their generally spheroid shape and grooved surface which resembles a brain. Each head of coral is formed by a colony of genetically identical polyps which secrete a hard skeleton of calcium carbonate; this makes them important coral reef builders like other stony corals in the order Scleractinia.Brain corals are found in shallow warm water coral reefs in all the world's oceans. They are part of the phylum Cnidaria, in a class called Anthozoa or "flower animals". The lifespan of the largest brain corals is 900 years. Colonies can grow as large as 1.8 m (6 ft) or more in height.Brain corals extend their tentacles to catch food at night. During the day, they use their tentacles for protection by wrapping them over the grooves on their surface. The surface is hard and offers good protection against fish or hurricanes. Branching corals, such as staghorn corals, grow more rapidly, but are more vulnerable to storm damage.Like other genera of corals, brain corals feed on small drifting animals, and also receive nutrients provided by the algae which live within their tissues. The behavior of one of the most common genera, "Favia", is semiaggressive; it will sting other corals with its extended sweeper tentacles during the night.The grooved surface of brain corals has been used by scientists to investigate methods of giving spherical wheels appropriate grip strength.


The term woodboring beetle encompasses many species and families of beetles whose larval or adult forms eat and destroy wood (i.e., are xylophagous). In the woodworking industry, larval stages of some are sometimes referred to as woodworms. The three most species-rich families of woodboring beetles are longhorn beetles, bark beetles and weevils, and metallic flat-headed borers. Woodboring is thought to be the ancestral ecology of beetles, and bores made by beetles in fossil wood extend back to the earliest fossil record of beetles in the Early Permian (Asselian), around 295-300 million years ago.


The nematodes ( or ; ) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxanomically classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa, and unlike flatworms, have tubular digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum.Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species described to date vary by author and may change rapidly over time. A 2013 survey of animal biodiversity published in the mega journal "Zootaxa" puts this figure at over 25,000. Estimates of the total number of extant species are subject to even greater variation. A widely referenced article published in 1993 estimated there may be over 1 million species of nematode. A subsequent publication challenged this claim, estimating the figure to be at least 40,000 species. Although the highest estimates (up to 100 million species) have since been deprecated, estimates supported by rarefaction curves, together with the use of DNA barcoding and the increasing acknowledgment of widespread cryptic species among nematodes, have placed the figure closer to 1 million species.Nematodes have successfully adapted to nearly every ecosystem: from marine (salt) to fresh water, soils, from the polar regions to the tropics, as well as the highest to the lowest of elevations (including mountains). They are ubiquitous in freshwater, marine, and terrestrial environments, where they often outnumber other animals in both individual and species counts, and are found in locations as diverse as mountains, deserts, and oceanic trenches. They are found in every part of the earth's lithosphere, even at great depths, 0.9 – 3.6 (km) below the surface of the Earth in gold mines in South Africa. They represent 90% of all animals on the ocean floor. In total, 4.4 × 1020 nematodes inhabit the Earth's topsoil, or approximately 60 billion for each human, with the highest densities observed in tundra and boreal forests. Their numerical dominance, often exceeding a million individuals per square meter and accounting for about 80% of all individual animals on earth, their diversity of lifecycles, and their presence at various trophic levels point to an important role in many ecosystems. They have been shown to play crucial roles in polar ecosystems. The roughly 2,271 genera are placed in 256 families. The many parasitic forms include pathogens in most plants and animals. A third of the genera occur as parasites of vertebrates; about 35 nematode species occur in humans.Nathan Cobb, a nematologist, described the ubiquity of nematodes on Earth thus:In short, if all the matter in the universe except the nematodes were swept away, our world would still be dimly recognizable, and if, as disembodied spirits, we could then investigate it, we should find its mountains, hills, vales, rivers, lakes, and oceans represented by a film of nematodes. The location of towns would be decipherable since, for every massing of human beings, there would be a corresponding massing of certain nematodes. Trees would still stand in ghostly rows representing our streets and highways. The location of the various plants and animals would still be decipherable, and, had we sufficient knowledge, in many cases even their species could be determined by an examination of their erstwhile nematode parasites.


A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name "snail" is also used for most of the members of the molluscan class Gastropoda that have a coiled shell that is large enough for the animal to retract completely into. When the word "snail" is used in this most general sense, it includes not just land snails but also numerous species of sea snails and freshwater snails. Gastropods that naturally lack a shell, or have only an internal shell, are mostly called "slugs", and land snails that have only a very small shell (that they cannot retract into) are often called "semi-slugs".Snails have considerable human relevance, including as food items, as pests, and as vectors of disease, and their shells are used as decorative objects and are incorporated into jewelry. The snail has also had some cultural significance, tending to be associated with lethargy. The snail has also been used as a figure of speech in reference to slow-moving things. The snail is the same or similar shape as the cochlea.


Slug, or land slug, is a common name for any apparently shell-less terrestrial gastropod mollusc. The word "slug" is also often used as part of the common name of any gastropod mollusc that has no shell, a very reduced shell, or only a small internal shell, particularly sea slugs and semislugs (this is in contrast to the common name "snail", which applies to gastropods that have a coiled shell large enough that they can fully retract their soft parts into it).Various taxonomic families of land slugs form part of several quite different evolutionary lineages, which also include snails. Thus, the various families of slugs are not closely related, despite a superficial similarity in the overall body form. The shell-less condition has arisen many times independently as an example of convergent evolution, and thus the category "slug" is polyphyletic.


Ark clam is the common name for a family of small to large-sized saltwater clams or marine bivalve molluscs in the family Arcidae. Ark clams vary both in shape and size. They number about 200 species worldwide.The shells of ark clams are often white or cream, but in some species, the shell is striped with, tinted with, or completely colored, a rich brown. In life the shell of most species has a top shell layer that is thick brown periostracum affixed to the harder calcareous part of the shell. In some species such as "Barbatia", this outer horny covering is tufted at the end of the shell into something that resembles a beard, hence the name "Barbatia" or bearded one.The group is known as "ark shells" because species such as "Arca" have a large flat area between the umbones which, in an undamaged shell, somewhat resembles a deck, with the rest of the shell perhaps illustrating an ancient wooden boat such as Noah's ark is thought to have been.All ark shells have a long straight hinge line with a single row of numerous small and unspecialized "teeth". This is known as a "taxodont dentition" and represents an ancient ancestor. This kind of hinge line is also found in the bivalve families Glycymerididae, Nuculidae and Nuculanidae.The thick outer skin or periostracum of an ark clam can act as camouflage, such that the shells can sometimes look like stones when lying on the bottom.Large ark clams, such as "Arca zebra", are commonly used as bait, as well as food, throughout the Caribbean.Some ark clams species, such as the blood cockle ("Anadara granosa", a.k.a. "Tegillarca granosa") are raised in aquaculture, e.g. in the estuaries of China's Fujian coast."Tegillarca granosa" was used as a food by Indigenous peoples living on the northern Australian coastline through at least the past ~4500 years, with extensive evidence preserved in the form of shell mound sites.


The Japanese spider crab ("Macrocheira kaempferi") is a species of marine crab that lives in the waters around Japan. It has the largest leg-span of any arthropod. It goes through three main larval stages along with a prezoeal stage to grow to its great size. The genus "Macrocheira" contains multiple species. Two fossil species of this genus have been found, "M. ginzanensis" and "M. yabei", both from the Miocene of Japan. Its diverse taxonomic history is an important part of what these creatures are and how they evolved to be what they are today. They are sought by crab fisheries, and are considered a delicacy in Japan. Conservation efforts aim to protect these creatures and their population from overfishing. The Japanese spider crab is similar in appearance to the much smaller European spider crab "(Maja squinado)", though the latter, while within the same superfamily, belongs to a different family, the Majidae.


Hermit crabs are anomuran decapod crustaceans of the superfamily Paguroidea that have adapted to occupy empty scavenged mollusc shells to protect their fragile exoskeletons. There are over 800 species of hermit crab, most of which possess an asymmetric abdomen concealed by a snug-fitting shell. Hermit crabs' soft (non-calcified) abdominal exoskeleton means they must occupy shelter produced by other organisms or risk being defenseless.The strong association between hermit crabs and their shelters has significantly influenced their biology. Almost 800 species carry mobile shelters (most often calcified snail shells); this protective mobility contributes to the diversity and multitude of crustaceans found in almost all marine environments. In most species, development involves metamorphosis from symmetric, free-swimming larvae to morphologically asymmetric, benthic-dwelling, shell-seeking crabs. Such physiological and behavioral extremes facilitate a transition to a sheltered lifestyle, revealing the extensive evolutionary lengths that led to their superfamily success.


The openbill storks or openbills are two species of stork (family "Ciconiidae") in the genus Anastomus. They are large wading birds characterized by large bills, the mandibles of which do not meet except at the tip. This feature develops only in the adults. Both species feed predominantly on molluscs. The roof of the upper bill is fringed with plate-like structures ("lamellae") in the African openbill, but these are absent in the Asian openbill.The genus "Anastomus" was erected by the French naturalist Pierre Bonnaterre in 1791. The type species was subsequently designated as the Asian openbill ("Anastomus oscitans"). The name "Anastomus" is from the Ancient Greek αναστομοω "anastomoō" meaning "to furnish with a mouth" or "with mouth wide-opened".There are two species of openbilled storks:


The shoebill (Balaeniceps rex) also known as whalehead, whale-headed stork, whalebill, or shoebill stork, is a very large stork-like bird. It derives its name from its enormous shoe-shaped bill. It has a somewhat stork-like overall form and has previously been classified with the storks in the order Ciconiiformes based on this morphology. However, genetic evidence places it with pelicans and herons in the Pelecaniformes. The adult is mainly grey while the juveniles are more brown. It lives in tropical east Africa in large swamps from South Sudan to Zambia.


The night herons are medium-sized herons, 58–65 cm, in the genera "Nycticorax", "Nyctanassa," and "Gorsachius". The genus name "Nycticorax" derives from the Greek for “night raven” and refers to the largely nocturnal feeding habits of this group of birds, and the croaking crow-like call of the best known species, the black-crowned night heron.In Europe, night heron is often used to refer to the black-crowned night heron, since it is the only member of the genus in that continent.Adults are short-necked, short-legged, and stout herons with a primarily brown or grey plumage, and, in most, a black crown. Young birds are brown, flecked with white. At least some of the extinct Mascarenes taxa appear to have retained this juvenile plumage in adult birds.Night herons nest alone or in colonies, on platforms of sticks in a group of trees, or on the ground in protected locations such as islands or reedbeds. 3-8 eggs are laid.Night herons stand still at the water's edge, and wait to ambush prey, mainly at night. They primarily eat small fish, crustaceans, frogs, aquatic insects, and small mammals. During the day, they rest in trees or bushes.There are seven extant species. The genus "Nycticorax" has suffered more than any other Pelecaniformes genus from extinction, mainly because of their capability to colonize small, predator-free oceanic islands, and a tendency to evolve towards flightlessness.Night herons breed mainly in southern and southeastern Europe and migrate across the Sahara to winter in central and west Africa.


A knot is an intentional complication in cordage which may be practical or decorative, or both. Practical knots are classified by function, including hitches, bends, loop knots, and splices: a "hitch" fastens a rope to another object; a "bend" fastens two ends of a rope to each another; a "loop knot" is any knot creating a loop; and "splice" denotes any multi-strand knot, including bends and loops. A knot may also refer, in the strictest sense, to a stopper or knob at the end of a rope to keep that end from slipping through a grommet or eye. Knots have excited interest since ancient times for their practical uses, as well as their topological intricacy, studied in the area of mathematics known as knot theory.


Pelicans (genus Pelecanus) are a genus of large water birds that make up the family Pelecanidae. They are characterized by a long beak and a large throat pouch used for catching prey and draining water from the scooped-up contents before swallowing. They have predominantly pale plumage, except for the brown and Peruvian pelicans. The bills, pouches, and bare facial skin of all pelicans become brightly coloured before the breeding season. The eight living pelican species have a patchy global distribution, ranging latitudinally from the tropics to the temperate zone, though they are absent from interior South America and from polar regions and the open ocean.Long thought to be related to frigatebirds, cormorants, tropicbirds, and gannets and boobies, pelicans instead are now known to be most closely related to the shoebill and hamerkop, and are placed in the order Pelecaniformes. Ibises, spoonbills, herons, and bitterns have been classified in the same order. Fossil evidence of pelicans dates back at least 36 million years to the remains of a tibiotarsus recovered from late Eocene strata of Egypt that bears striking similarity to modern species of pelican. They are thought to have evolved in the Old World and spread into the Americas; this is reflected in the relationships within the genus as the eight species divide into Old World and New World lineages. This hypothesis is supported by fossil evidence from the oldest pelican taxa.Pelicans frequent inland and coastal waters, where they feed principally on fish, catching them at or near the water surface. They are gregarious birds, travelling in flocks, hunting cooperatively, and breeding colonially. Four white-plumaged species tend to nest on the ground, and four brown or grey-plumaged species nest mainly in trees. The relationship between pelicans and people has often been contentious. The birds have been persecuted because of their perceived competition with commercial and recreational fishing. Their populations have fallen through habitat destruction, disturbance, and environmental pollution, and three species are of conservation concern. They also have a long history of cultural significance in mythology, and in Christian and heraldic iconography.


The emperor penguin (Aptenodytes forsteri) is the tallest and heaviest of all living penguin species and is endemic to Antarctica. The male and female are similar in plumage and size, reaching 100 (cm) in length and weighing from 22 to 45 (kg). Feathers of the head and back are black and sharply delineated from the white belly, pale-yellow breast and bright-yellow ear patches.Like all penguins it is flightless, with a streamlined body, and wings stiffened and flattened into flippers for a marine habitat. Its diet consists primarily of fish, but also includes crustaceans, such as krill, and cephalopods, such as squid. While hunting, the species can remain submerged around 20 minutes, diving to a depth of 535 (m). It has several adaptations to facilitate this, including an unusually structured haemoglobin to allow it to function at low oxygen levels, solid bones to reduce barotrauma, and the ability to reduce its metabolism and shut down non-essential organ functions.The only penguin species that breeds during the Antarctic winter, emperor penguins trek 50 – 120 (km) over the ice to breeding colonies which can contain up to several thousand individuals. The female lays a single egg, which is incubated for just over two months by the male while the female returns to the sea to feed; parents subsequently take turns foraging at sea and caring for their chick in the colony. The lifespan is typically 20 years in the wild, although observations suggest that some individuals may live to 50 years of age.


Whales are a widely distributed and diverse group of fully aquatic placental marine mammals. As an informal and colloquial grouping, they correspond to large members of the infraorder Cetacea, i.e. all cetaceans apart from dolphins and porpoises. Dolphins and porpoises may be considered whales from a formal, cladistic perspective. Whales, dolphins and porpoises belong to the order Cetartiodactyla, which consists of even-toed ungulates. Their closest non-cetacean living relatives are the hippopotamuses, from which they and other cetaceans diverged about 54 million years ago. The two parvorders of whales, baleen whales (Mysticeti) and toothed whales (Odontoceti), are thought to have had their last common ancestor around 34 million years ago. Mysticetes include four extant (living) families: Balaenopteridae (the rorquals), Balaenidae (right whales), Cetotheriidae (the pygmy right whale), and Eschrichtiidae (the grey whale). Odontocetes include the Monodontidae (belugas and narwhals), Physeteridae (the sperm whale), Kogiidae (the dwarf and pygmy sperm whale), and Ziphiidae (the beaked whales), as well as the six families of dolphins and porpoises which are not considered whales in the informal sense.Whales are fully aquatic, open-ocean creatures: they can feed, mate, give birth, suckle and raise their young at sea. Whales range in size from the 2.6 (m) and 135 (kg) dwarf sperm whale to the 29.9 (m) and 190 (MT) blue whale, which is the largest known creature that has ever lived. The sperm whale is the largest toothed predator on earth. Several whale species exhibit sexual dimorphism, in that the females are larger than males.Baleen whales have no teeth; instead they have plates of baleen, fringe-like structures that enable them to expel the huge mouthfuls of water they take in, while retaining the krill and plankton they feed on. Because their heads are enormous—making up as much as 40% of their total body mass—and they have throat pleats that enable then to expand their mouths, they are able to take huge quantities of water into their mouth at a time. Baleen whales also have a well developed sense of smell.Toothed whales, in contrast, have conical teeth adapted to catching fish or squid. They also have such keen hearing—whether above or below the surface of the water—that some can survive even if they are blind. Some species, such as sperm whales, are particularly well adapted for diving to great depths to catch squid and other favoured prey.Whales evolved from land-living mammals, and must regularly surface to breathe air, although they can remain under water for long periods of time. Some species, such as the sperm whale can stay underwater for up to 90 minutes They have blowholes (modified nostrils) located on top of their heads, through which air is taken in and expelled. They are warm-blooded, and have a layer of fat, or blubber, under the skin. With streamlined fusiform bodies and two limbs that are modified into flippers, whales can travel at speeds of up to 20 knots, though they are not as flexible or agile as seals. Whales produce a great variety of vocalizations, notably the extended songs of the humpback whale. Although whales are widespread, most species prefer the colder waters of the northern and southern hemispheres, and migrate to the equator to give birth. Species such as humpbacks and blue whales are capable of travelling thousands of miles without feeding. Males typically mate with multiple females every year, but females only mate every two to three years. Calves are typically born in the spring and summer; females bear all the responsibility for raising them. Mothers in some species fast and nurse their young for one to two years.Once relentlessly hunted for their products, whales are now protected by international law. The North Atlantic right whales nearly became extinct in the twentieth century, with a population low of 450, and the North Pacific grey whale population is ranked Critically Endangered by the IUCN. Besides the threat from whalers, they also face threats from bycatch and marine pollution. The meat, blubber and baleen of whales have traditionally been used by indigenous peoples of the Arctic. Whales have been depicted in various cultures worldwide, notably by the Inuit and the coastal peoples of Vietnam and Ghana, who sometimes hold whale funerals. Whales occasionally feature in literature and film. A famous example is the great white whale in Herman Melville's novel "Moby Dick". Small whales, such as belugas, are sometimes kept in captivity and trained to perform tricks, but breeding success has been poor and the animals often die within a few months of capture. Whale watching has become a form of tourism around the world.


Porpoises are a group of fully aquatic marine mammals, similar in appearance to a dolphin, all of which are classified under the family Phocoenidae, parvorder Odontoceti (toothed whales). They are, however, more closely related to narwhals and belugas than to the true dolphins. There are eight extant species of porpoise, all among the smallest of the toothed whales. Porpoises are distinguished from dolphins by their flattened, spade-shaped teeth distinct from the conical teeth of dolphins, and lack of a pronounced beak, although some dolphins (e.g. Hector's dolphin) also lack a pronounced beak. Porpoises, and other cetaceans, belong to the clade Cetartiodactyla with even-toed ungulates.Porpoises range in size from the vaquita, at 1.4 (m) in length and 54 (kg) in weight, to the Dall's porpoise, at 2.3 (m) and 220 (kg). Several species exhibit sexual dimorphism in that the females are larger than males. They have streamlined bodies and two limbs that are modified into flippers. Porpoises use echolocation as their primary sensory system. Some species are well adapted for diving to great depths. As all cetaceans, they have a layer of fat, or blubber, under the skin to keep them warm in cold water.Porpoises are abundant and found in a multitude of environments, including rivers (finless porpoise), coastal and shelf waters (harbour porpoise, vaquita) and open ocean (Dall's porpoise and spectacled porpoise), covering all water temperatures from tropical (Sea of Cortez, vaquita) to polar (Greenland, harbour porpoise). Porpoises feed largely on fish and squid, much like the rest of the odontocetes. Little is known about reproductive behaviour. Females may get one calf every year under favourable conditions. Calves are typically born in the spring and summer months and remain dependent on the female until the following spring. Porpoises produce ultrasonic clicks, which are used for both navigation (echolocation) and social communication. In contrast to many dolphin species, porpoises do not form large social groups.Porpoises were, and still are, hunted by some countries by means of drive hunting. Larger threats to porpoises include extensive bycatch in gill nets, competition for food from fisheries, and marine pollution, in particular heavy metals and organochlorides. The vaquita is nearly extinct due to bycatch in gill nets, with a predicted population of fewer than a dozen individuals. Since the extinction of the baiji, the vaquita is considered the most endangered cetacean. Some species of porpoises have been and are kept in captivity and trained for research, education and public display.


An omnivore () is an animal that has the ability to eat and survive on both plant and animal matter. Obtaining energy and nutrients from plant and animal matter, omnivores digest carbohydrates, protein, fat, and fiber, and metabolize the nutrients and energy of the sources absorbed. Often, they have the ability to incorporate food sources such as algae, fungi, and bacteria into their diet.Omnivores come from diverse backgrounds that often independently evolved sophisticated consumption capabilities. For instance, dogs evolved from primarily carnivorous organisms (Carnivora) while pigs evolved from primarily herbivorous organisms (Artiodactyla). Despite this, physical characteristics such as tooth morphology may be reliable indicators of diet in mammals, with such morphological adaptation having been observed in bears.The variety of different animals that are classified as omnivores can be placed into further sub-categories depending on their feeding behaviors. Frugivores include maned wolves and orangutans; insectivores include swallows and pink fairy armadillos; granivores include large ground finches and mice.All of these animals are omnivores, yet still fall into special niches in terms of feeding behavior and preferred foods. Being omnivores gives these animals more food security in stressful times or makes possible living in less consistent environments.


Sea lions are pinnipeds characterized by external ear flaps, long foreflippers, the ability to walk on all fours, short and thick hair, and a big chest and belly. Together with the fur seals, they make up the family Otariidae, eared seals. The sea lions have six extant and one extinct species (the Japanese sea lion) in five genera. Their range extends from the subarctic to tropical waters of the global ocean in both the Northern and Southern Hemispheres, with the notable exception of the northern Atlantic Ocean. They have an average lifespan of 20–30 years. A male California sea lion weighs on average about 300 (kg) and is about 8 (ft) long, while the female sea lion weighs 100 (kg) and is 6 (ft) long. The largest sea lions are Steller's sea lions, which can weigh 1000 (kg) and grow to a length of 10 (ft). Sea lions consume large quantities of food at a time and are known to eat about 5–8% of their body weight (about 15 - 35 (lb)) at a single feeding. Sea lions can move around 16 (knots) in water and at their fastest they can reach a speed of about 30 (knots). Three species, the Australian sea lion, the Galápagos sea lion and the New Zealand sea lion, are listed as endangered.


The Chihuahua or is a Mexican breed of toy dog. It is named for the Mexican state of Chihuahua and is among the smallest of all dog breeds. It is usually kept as a companion animal or for showing.


Bassets are a sub-type of scenthound deliberately bred with short legs, that are used for hunting where the hunters accompany the hunting hounds on foot.


The Bluetick Coonhound is a breed of coonhound originating in the United States. The Bluetick Coonhound is known for its friendly personality, cold nose, and deep bawl mouth. It is most commonly used as a raccoon hunting dog, but may also be kept as a pet.


A coonhound, colloquially a coon dog, is a type of scenthound, a member of the hound group. They are an American type of hunting dog developed for the hunting of raccoons, hence their name, and also for feral pigs, bobcats, cougars, and bears. There are six distinct breeds of coonhound.


A foxhound is a type of large hunting hound bred for strong hunting instincts, a keen sense of smell, their bark, energy, drive, and speed. In fox hunting, the foxhound's namesake, packs of foxhounds track quarry, followed—usually on horseback—by the hunters, sometimes for several miles at a stretch; moreover, foxhounds also sometimes guard sheep and houses.
There are different breeds of foxhound, each having slightly different characteristics and appearances, and each often called simply Foxhound in their native countries:

American Foxhound
Dumfriesshire Black and Tan Foxhound (extinct)
English Foxhound
Welsh FoxhoundThe American Masters of Foxhounds Association recognizes these breeds of foxhounds:
American, Penn-Marydel, English, and crossbred foxhounds.
The International Foxhound Association was created in 2012 for the international promotion of the Foxhound as a breed


The Norwegian Elkhound is one of the Northern Spitz-type breeds of dog and is the National Dog of Norway. The Elkhound has served as a hunter, guardian, herder, and defender. It is known for its courage in tracking and hunting moose and other large game, such as bears or wolves. The Norwegian Elkhound was first presented at a dog exhibition in Norway in 1877.The AKC breed name "Norwegian Elkhound" is a direct translation from its original Norwegian name "Norsk elghund", meaning "Norwegian moose dog." The breed's object in the hunt is to independently track down and hold the moose at bay—jumping in and out toward the moose, distracting its attention, while signaling to the hunters by barking very loudly—until the hunter who follows the sound can arrive to shoot it. The dog will only bark while the moose is stationary, but it can also slowly drive the moose towards shooters lying in wait. The Norwegian Elkhound is also used on a leash. In this mode of hunting, the dog leads the hunter in the direction of the moose while keeping quiet.


The Weimaraner ( ) is a large dog that was originally bred as a hunting dog in the early 19th century. Early Weimaraners were used by royalty for hunting large game such as boar, bear and deer. As the popularity of large game hunting began to decline, Weimaraners were used for hunting smaller animals like fowl, rabbits and foxes.The Weimaraner is an all-purpose gun dog. The name comes from the Grand Duke of Saxe-Weimar-Eisenach, Karl August, whose court, located in the city of Weimar (now in the state of Thuringia in modern-day Germany), enjoyed hunting. The Weimaraner possesses traits such as speed, stamina, great sense of smell, great eyes, courage, and intelligence. The breed is sometimes referred to as the "grey ghost" of the dog world originating from its ghostly coat and eye color along with its stealthy hunting style.


The Staffordshire Bull Terrier, also called the Staffy or Stafford, is a purebred dog of small to medium size in the terrier group that originated in the northern parts of Birmingham and in the Black Country of Staffordshire, for which it is named. They descended from 19th century bull terriers that were developed by crossing bulldogs with various terriers to create a generic type of dog generally known as bull and terriers. Staffords share the same ancestry with the modern Bull Terrier, although the two breeds developed along independent lines, and do not resemble each other. Modern Staffords more closely resemble the old type of bull terrier, and was first recognised as a purebred dog breed by The Kennel Club of Great Britain in 1935.Within the broad sweep of dog history, the story behind the modern Stafford is rather brief and somewhat confusing because of the multiple aliases attached to these dogs in centuries past, such as the "Patched Fighting Terrier", "Staffordshire Pit-dog", "Brindle Bull", and "Bull-and-Terrier". Similar crosses also had aliases such as half-and-halfs and half-breds. Blood sports such as bull-baiting and bear-baiting were outlawed with the passing of the Cruelty to Animals Act 1835 by Parliament, forcing dog fighting underground. Dog breeders migrated away from the heavier bulldogs, and introduced terrier blood into their crosses for gameness and agility. These bull and terrier crosses produced the ancestral breeding stock that, over the course of decades, evolved into the modern conformation show dogs we know today as the Staffordshire Bull Terrier, and Bull Terrier. It was shortly before the American Civil War that immigrants from Great Britain brought their bull and terrier crossbreeds into the U.S. They became the ancestral progenitors of the American Staffordshire Terrier (AmStaff), Miniature Bull Terrier, Boston Terrier, and American Pit Bull Terrier.By mid–19th century, and with stricter enforcement of the 1835 Cruelty law, conformation dog shows became the new focus for dog breeders across Great Britain. As a result, reputable breeders no longer needed to breed dogs with attributes necessary for bull, bear and rat-baiting, so dog breeders focused on conformation and temperament to produce dog show champions. The growing popularity of dog shows created the need to document and preserve dog show results, establish rules for showing, and document pedigrees of the developing new breeds to prevent fraud. To serve that purpose, the Kennel Club was founded on April 4, 1873. They established dog show rules, but were not involved in establishing the breed standards by which each breed of dog would be judged. Local dog clubs were responsible for creating the breed standard for their particular breed of dog.


The Wire Fox Terrier (also known as Wire Hair Fox Terrier or Wirehaired Terrier) is a breed of dog, one of many terrier breeds. It is a fox terrier, and although it bears a resemblance to the Smooth Fox Terrier, they are believed to have been developed separately.


The Lakeland Terrier is a dog breed, which takes its name from its place of origin, the Lake District in England. The dog is a small to mid-size member of the Terrier family. While independent in personality, it interacts well with owners and all family members, and is mostly hypo-allergenic (non shedding). In the United Kingdom, the Lakeland Terrier is considered a vulnerable dog breed at risk of going extinct through low levels of breeding, according to The Kennel Club. In the United States, the Lakeland Terrier ranked 148 out of 193 breeds by number of American Kennel Club puppy registrations in 2019.


A cairn is a man-made pile (or stack) of stones raised for a purpose, usually as a marker or as a burial mound. The word "cairn" comes from the (plural ).Cairns have been and are used for a broad variety of purposes. In prehistoric times, they were raised as markers, as memorials and as burial monuments (some of which contained chambers). In modern times, cairns are often raised as landmarks, especially to mark the summits of mountains. Cairns are also used as trail markers. They vary in size from small stone markers to entire artificial hills, and in complexity from loose conical rock piles to elaborate megalithic structures. Cairns may be painted or otherwise decorated, whether for increased visibility or for religious reasons.A variant is the inuksuk (plural inuksuit), used by the Inuit and other peoples of the Arctic region of North America.


A Dandie Dinmont Terrier is a small Scottish dog breed in the terrier family. The breed has a very long body, short legs, and a distinctive topknot of hair on the head. They are friendly but tough, and are suitable for interaction with older children. There are breed-specific health concerns: they can be affected by spinal problems due to their elongated body, and the breed is affected by canine cancer at a higher than average rate.The breed is named after a fictional character in Sir Walter Scott's novel, "Guy Mannering". This character, Dandie Dinmont, is thought to be partly based on James Davidson, who is credited as the originator of the modern breed. Davidson's dogs descended from earlier terrier-owning families, including the Allans of Holystone, Northumberland.There are three breed clubs in the UK supporting the breed, although it is registered as a Vulnerable Native Breed by the Kennel Club due to its low number of puppy registrations per year.


The Boston Terrier is a breed of dog originating in the United States of America. This "American Gentleman" was accepted in 1893 by the American Kennel Club as a non-sporting breed. Color and markings are important when distinguishing this breed from the AKC standard. They should be either black, brindle or seal with white markings. Boston Terriers are small and compact with a short tail and erect ears. The AKC says they are highly intelligent and very easily trained. They are friendly and can be stubborn at times. The average life span of a Boston Terrier is around 11 to 13 years.The American Kennel Club ranked the Boston Terrier as the 21st most popular breed in 2019.


A Schnauzer (), plural "Schnauzer", lit. translation "snouter") is a dog breed type that originated in Germany from the 14th to 16th centuries. The term comes from the German word for "snout" and means colloquially "moustache", or "whiskered snout", because of the dog's distinctively bearded snout. Initially it was called Wire-Haired Pinscher, while Schnauzer was adopted in 1879.


The Miniature Schnauzer is a breed of small dog of the Schnauzer type that originated in Germany in the mid-to-late 19th century. Miniature Schnauzers may have been developed from the smallest specimens of the Standard Schnauzer, or crosses between the standard and one or more smaller breeds such as the Affenpinscher, Miniature Pinscher, and Poodles, as farmers bred a small dog that was an efficient ratting dog. They are described as "spunky" but aloof dogs, with good guarding tendencies without some guard dogs' predisposition to bite. Miniature Schnauzers are recognized in four colors internationally: solid black, black and silver, salt and pepper, and white.It is the most popular Schnauzer breed, and remains one of the most popular worldwide, primarily for its temperament and relatively small size. As of 2020 it is the 19th most popular breed in the U.S.


The Scottish Terrier (; also known as the Aberdeen Terrier), popularly called the Scottie, is a breed of dog. Initially one of the highland breeds of terrier that were grouped under the name of "Skye Terrier", it is one of five breeds of terrier that originated in Scotland, the other four being the modern Skye, Cairn, Dandie Dinmont, and West Highland White terriers. They are an independent and rugged breed with a wiry outer coat and a soft dense undercoat. The First Earl of Dumbarton nicknamed the breed "the diehard". According to legend, the Earl of Dumbarton gave this nickname because of the Scottish Terriers' bravery, and Scotties were also the inspiration for the name of his regiment, The Royal Scots, Dumbarton’s Diehard. Scottish Terriers, were originally bred to hunt vermin on farms.They are a small breed of terrier with a distinctive shape and have had many roles in popular culture. They have been owned by a variety of celebrities, including the 32nd president of the United States, Franklin Delano Roosevelt, whose Scottie Fala is included with FDR in a statue in Washington, D.C., as well as by the 43rd president, George W. Bush. They are also well known for being a playing piece in the board game "Monopoly". Described as territorial, feisty dogs, they can make a good watchdog and tend to be very loyal to their family. Healthwise, Scottish Terriers can be more prone to bleeding disorders, joint disorders, autoimmune diseases, allergies, and cancer than some other breeds of dog, and there is a condition named after the breed called Scotty cramp. They are also one of the more successful dog breeds at the Westminster Kennel Club Dog Show with a best in show in 2010.


The Tibetan Terrier is a medium-sized breed of dog that originated in Tibet. Despite its name, it is not a member of the terrier group. The breed was given its English name by European travelers due to its resemblance to known terrier breeds. The Tibetan name for the breed, Tsang Apso, roughly translates to "shaggy or bearded ("apso") dog, from the province of Tsang". Some old travelers' accounts refer to the dog as Dokhi Apso or "outdoor" Apso, indicating a shaggy or bearded working dog which lives outdoors.


The German Shorthaired Pointer (GSP) is a medium to large sized breed of pointing dog developed in the 19th century in Germany for hunting. A versatile hunting breed, being an all-purpose gun dog suitable for both land and water, they are streamlined yet powerful with strong legs. While a hunting breed that retains a strong drive to find and chase game, they are extremely energetic and can excel at a wide variety of dog sports. Their demeanor when well-socialized is friendly toward both people and fellow canines, with some tendency to be "velcro dogs".The German Shorthaired Pointer has a short coat that comes in various combinations, generally a mix of liver and white. They have moderately long floppy ears set high on the head. Longer, broad, and strong, muzzles allow retrieval of heavier game. The dog's profile should be straight or strongly Roman nosed; any dished appearance to the profile is incorrect according to breed standards. Their eyes are generally brown, with darker eyes being desirable; yellow or "bird of prey" eyes are a fault. The tail is commonly docked, although this is now prohibited in some countries. In competition they are penalized if the tail is curved either up or down while the dog is moving. When the GSP is in classic point stance, the tail should be held straight out from the body, forming a line with the pointing head and body. Like all German pointers, GSPs have webbed feet and are known for going after waterfowl in the water.The German Shorthaired Pointer is a member of the Sporting Group. In 2016, CJ, a 3-year-old German Shorthaired Pointer, won the Best in Show award at the 140th Westminster Kennel Club Dog Show.


The Gordon Setter is a large breed of dog, a member of the setter family that also includes both the better-known Irish Setter and the English Setter. Setter breeds are classified as members of either the Sporting or Gundog Group depending on the national kennel club or council. The original purpose of the breed was to hunt gamebirds. Their quarry in the United Kingdom, may be partridge or grouse, pheasant, ptarmigan, blackgame, snipe or woodcock: whilst overseas bird dogs are worked on quail, willow grouse, sand grouse, guinea fowl, sagehen, francolin and any other bird that will sit to a dog—that is to say, will attempt to avoid a potential predator by concealment rather than by taking to the wing at the first sign of danger. It is this combination of a bird that will sit fast in front of a dog that will remain on point that makes bird dog work possible.


The Briard or is a French breed of large shepherd dog, traditionally used both for herding sheep and to defend them. It was first shown at the first Paris dog show, in 1863; the first Briard to be registered in the "Livre des Origines Françaises", the national stud-book, was Sans Gêne in 1885. It was in the past also known as the Chien de Berger français de Plaine.


The Komondor (), also known as the Hungarian sheepdog, is a large, white-coloured Hungarian breed of livestock guardian dog with a long, corded coat.Sometimes referred to as 'mop dogs', the Komondor is a long-established dog breed commonly employed to guard livestock and other property. The Komondor was brought to Europe by the Cumans and the oldest known mention of it is in a Hungarian codex from 1544. The Komondor breed has been declared one of Hungary’s national treasures, to be preserved and protected from modification.


The Old English Sheepdog is a large breed of dog that emerged in England from early types of herding dog. Obsolete names for the breed include Shepherd's Dog and . The nickname "Bob-tail" (or "Bobtail") originates from how dogs of the breed traditionally had their tails docked. Old English Sheepdogs can grow very long coats with fur covering the face and eyes and do not shed unless brushed.


The Border Collie is a British breed of herding dog of medium size. Widely considered to be the most intelligent dog breed, they are descended from landrace sheepdogs once found all over the British Isles, but became standardised in the Anglo-Scottish border region. They are now mostly used as working dogs to herd livestock, specifically sheep.Border Collies are extremely energetic, acrobatic, and athletic. They frequently compete with great success in sheepdog trials and a range of dog sports like dog obedience, disc dog, herding and dog agility. Border Collies continue to be employed in their traditional work of herding livestock throughout the world and are kept as pets.


The Greater Swiss Mountain Dog ( or ) is a dog breed which was developed in the Swiss Alps. The name "Sennenhund" refers to people called "Senn" or "Senner", dairymen and herders in the Swiss Alps. Greater Swiss Mountain Dogs are almost certainly the result of indigenous dogs mating with large mastiff-type dogs brought to Switzerland by foreign settlers. At one time, the breed was believed to have been among the most popular in Switzerland. It was assumed to have almost died out by the late 19th century, since its work was being done by other breeds or machines, but was rediscovered in the early 1900s.The breed is large and heavy-boned with great physical strength, but is still agile enough to perform the all-purpose farm duties it was originally used for. Its breed standard calls for a black, white, and rust colored coat.The Greater Swiss Mountain Dog is sociable, active, calm, and dignified, and loves being part of the family. It is relatively healthy for its size and tends to have far fewer problems than more popular breeds in its size range. Among the four Sennenhunde, or Swiss mountain dogs, this breed is considered the oldest, and is also the largest.


A mastiff is a large and powerful type of dog. Mastiffs are among the largest dogs, and typically have a short coat, a long low-set tail and large feet; the skull is large and bulky, the muzzle broad and short (brachycephalic) and the ears drooping and pendant-shaped. European and Asian records dating back 3,000 years show dogs of the mastiff type. Mastiffs have historically been guard dogs, protecting homes and property, although throughout history they have been used as hunting dogs, war dogs and for blood sports, such as fighting each other and other animals including bulls, bears and even lions.Historical and archaeological evidence suggests that mastiffs have long been distinct in both form and function from the similarly large livestock guardian dogs from which they were most likely developed; they also form separate genetic populations. The Fédération Cynologique Internationale and some kennel clubs group the two types together as molossoid dogs; some modern livestock guardian breeds, such as the Pyrenean Mastiff, the Spanish Mastiff and the Tibetan Mastiff, have the word "mastiff" in their name, but are not considered true mastiffs.Many older English sources refer to mastiffs as bandogs or bandogges, although technically the term "bandog" meant a dog that was tethered by a chain (or "bande") that would be released at night; the terms "mastiff" and "bandog" were often used interchangeably. In the 20th century, the term "bandog" has been revived to describe some lines of large mastiff-type guard dogs. One of the most famous Bandog programs in England, led to the establishment of a recognized bandog breed known today as the Bull Mastiff. The least common bandog program in England was funded by Sir Nathanael Dieu-est-Mon'plaisir, the St. Louis Vincent Mastiff or South American Mastiff was named after Vincent Louis who reared plantation dogs originating from St. Louis and other parts of South America. This rare breed is the most desirable and expensive mastiff-type dog amongst the bandog breeds.


The Great Dane is a large sized dog breed originating from Germany. The Great Dane descends from hunting dogs from the Middle Ages used to hunt wild boar and deer, and as guardians of German nobility. It is one of the largest breeds in the world along with its relative, the Irish Wolfhound.


The Saint Bernard or St. Bernard (, ) is a breed of very large working dog from the Western Alps in Italy and Switzerland. They were originally bred for rescue work by the hospice of the Great St Bernard Pass on the Italian-Swiss border. The hospice, built by and named after Italian monk Bernard of Menthon, acquired its first dogs between 1660 and 1670. The breed has become famous through tales of Alpine rescues, as well as for its large size, and gentle temperament.


A sled dog is a dog trained and used to pull a land vehicle in harness, most commonly a sled over snow.Sled dogs have been used in the Arctic for at least 8,000 years and, along with watercraft, were the only transportation in Arctic areas until the introduction of semi-trailer trucks, snowmobiles and airplanes in the 20th century, hauling supplies in areas that were inaccessible by other methods. They were used with varying success in the explorations of both poles, as well as during the Alaskan gold rush. Sled dog teams delivered mail to rural communities in Alaska, Yukon, Northwest Territories and Nunavut. Sled dogs today are still used by some rural communities, especially in areas of Russia, Canada, and Alaska as well as much of Greenland. They are used for recreational purposes and racing events, such as the Iditarod Trail and the Yukon Quest.


The Affenpinscher, also known as the Monkey Terrier, is a terrier-like toy Pinscher breed of dog.


The Welsh Corgi ( or Corgi, plural Corgis, or occasionally the etymologically consistent Corgwn; ) is a small type of herding dog that originated in Wales. The name "corgi" is derived from the Welsh words "cor" and "ci" (which is mutated to ‘gi’), meaning "dwarf" and "dog", respectively.
Two separate breeds are recognised: the Pembroke Welsh Corgi and the Cardigan Welsh Corgi. There are physical differences between the two different breeds. According to the breed standards, overall the Cardigan is larger, both in weight and in height. Their tails are of different shapes, and docking had previously been performed.
Historically, the Pembroke has been attributed to the influx of dogs alongside Flemish weavers from around the 10th century, while the Cardigan is attributed to the dogs brought with Norse settlers, in particular a common ancestor of the Swedish Vallhund.
The Pembroke is the more popular of the two, yet still appears on The Kennel Club's vulnerable dog breeds of the United Kingdom list.
The Pembroke Welsh Corgi gained in popularity because the Queen has personally owned more than 30 Pembrokes or Corgi-Dachshund crosses, known as dorgis.


The red wolf (Canis rufus) is a canine native to the southeastern United States. Its size is intermediate between the coyote ("Canis latrans") and gray wolf ("Canis lupus").The red wolf's taxonomic classification as being a separate species, a subspecies of the gray wolf "Canis lupus rufus", or a coywolf (a genetic admixture of wolf and coyote) has been contentious for nearly a century. Because of this, it is sometimes excluded from endangered species lists, despite its critically low numbers. Under the Endangered Species Act of 1973, the U.S. Fish and Wildlife Service currently recognizes the red wolf as an endangered species and grants protected status. Since 1996, the IUCN has listed the red wolf as a Critically Endangered species; however, it is not listed in the CITES Appendices of endangered species.


The dingo (Canis familiaris, Canis familiaris dingo, Canis dingo, or Canis lupus dingo) is an ancient (basal) lineage of dog found in Australia. Its taxonomic classification is debated as indicated by the variety of scientific names presently applied in different publications. It is variously considered a form of domestic dog not warranting recognition as a subspecies, a subspecies of dog or wolf, or a full species in its own right.The dingo is a medium-sized canine that possesses a lean, hardy body adapted for speed, agility, and stamina. The dingo's three main coat colourations are light ginger or tan, black and tan, or creamy white. The skull is wedge-shaped and appears large in proportion to the body. The dingo is closely related to the New Guinea singing dog, or the New Guinea Highland wild dog: their lineage split early from the lineage that led to today's domestic dogs, and can be traced back through the Maritime Southeast Asia to Asia.The earliest known dingo fossil, found in Western Australia, dates to 3,450 years ago. However, genomic analysis indicates that the dingo reached Australia 8,300 years ago but the human population which brought them remains unknown. Dingo morphology has not changed over the past 3,500 years: this suggests that no artificial selection has been applied over this period. The dingo's habitat covers most of Australia, but they are absent in the southeast and Tasmania, and an area in the southwest (see map). As Australia's largest extant terrestrial predators, dingoes prey on mammals up to the size of the large red kangaroo, in addition to birds, reptiles, fish, crabs, frogs, insects, and seeds. The dingo's competitors include the native quoll, the introduced European red fox and the feral cat. A dingo pack usually consists of a mated pair, their offspring from the current year, and sometimes offspring from the previous year.The first British colonists who settled at Port Jackson in 1788 recorded dingoes living with indigenous Australians, and later at Melville Island in 1818, and the lower Darling and Murray rivers in 1862, indicating that dingoes were under some form of domestication by aboriginal Australians. When livestock farming began expanding across Australia in the early 19th century, dingoes began preying on sheep and cattle. Numerous population-control measures have been implemented since then, with only limited success. The dingo is recognised as a native animal under the laws of all Australian jurisdictions.The dingo plays a prominent role in the Dreamtime stories of indigenous Australians; however, it rarely appears depicted in their cave paintings when compared with the extinct thylacine, also known as the Tasmanian wolf or Tasmanian tiger.


The Arctic fox (Vulpes lagopus), also known as the white fox, polar fox, or snow fox, is a small fox native to the Arctic regions of the Northern Hemisphere and common throughout the Arctic tundra biome. It is well adapted to living in cold environments, and is best known for its thick, warm fur that is also used as camouflage. It has a large and very fluffy tail. In the wild, most individuals do not live past their first year but some exceptional ones survive up to 11 years. Its body length ranges from 46 to 68 (cm), with a generally rounded body shape to minimize the escape of body heat.The Arctic fox preys on many small creatures such as lemmings, voles, ringed seal pups, fish, waterfowl, and seabirds. It also eats carrion, berries, seaweed, and insects and other small invertebrates. Arctic foxes form monogamous pairs during the breeding season and they stay together to raise their young in complex underground dens. Occasionally, other family members may assist in raising their young. Natural predators of the Arctic fox are golden eagles, Arctic wolves, polar bears, wolverines, red foxes, and grizzly bears.


Pussy is a used as a noun, an adjective, and—in rare instances—a verb in the English language. It has several meanings, as slang, as euphemism, and as vulgarity. The most common as a noun, it means "cat", as well as "coward or weakling". In slang usage, it can mean "the human vulva or vagina" and less commonly, as a form of synecdoche, meaning "sexual intercourse with a woman". Because of its multiple senses including both innocent and vulgar connotations, "pussy" is often the subject of double entendre.The etymology of the word is not clear. Several different senses of the word have different histories or origins. The earliest records of "pussy" are in the 19th century, meaning something fluffy.


A kitten is a juvenile cat. After being born, kittens display primary altriciality and are totally dependent on their mothers for survival. They normally do not open their eyes for seven to ten days. After about two weeks, kittens develop quickly and begin to explore the world outside their nest. After a further three to four weeks, they begin to eat solid food and grow baby teeth. Domestic kittens are highly social animals and usually enjoy human companionship.


The Persian cat (), also known as the Persian longhair, is a long-haired breed of cat characterized by a round face and short muzzle. The first documented ancestors of Persian cats were imported into Italy from Persia around 1620. Widely recognized by cat fancy since the late 19th century, Persian cats were first adopted by the British, and later by American breeders after World War II. Some cat fancier organizations' breed standards subsume the Himalayan and Exotic Shorthair as variants of this breed, while others treat them as separate breeds.The selective breeding carried out by breeders has allowed the development of a wide variety of coat colors, but has also led to the creation of increasingly flat-faced Persian cats. Favored by fanciers, this head structure can bring with it a number of health problems. As is the case with the Siamese breed, there have been efforts by some breeders to preserve the older type of cat, the "traditional breed", having a more pronounced muzzle, which is more popular with the general public. Hereditary polycystic kidney disease is prevalent in the breed, affecting almost half of the population in some countries.In 2021, Persian cats were ranked as the fourth-most popular cat breed in the world according to the Cat Fanciers' Association, an American non-profit cat registry.


The African wildcat (Felis lybica) is a small wildcat species native to Africa, West and Central Asia up to Rajasthan in India and Xinjiang in China. It has been listed as Least Concern on the IUCN Red List in 2022.In Cyprus, an African wildcat was found in a burial site next to a human skeleton in the Pre-Pottery Neolithic B settlement Shillourokambos. The graves are estimated to have been established by Neolithic farmers about 9,500 years ago, and are the earliest known evidence for a close association between a cat and a human. Their proximity indicates that the cat may have been tamed or domesticated.Results of genetic research indicate that the African wildcat genetically diverged into three clades about 173,000 years ago, namely the Near Eastern wildcat, Southern African wildcat and Asiatic wildcat. African wildcats were first domesticated about 10,000 years ago in the Near East, and are the ancestors of the domestic cat ("F. catus"). Crossings between domestic cat and African wildcat are still common today.


A lynx (; plural lynx or lynxes) is any of the four species (the Canada lynx, Iberian lynx, Eurasian lynx, or bobcat) within the medium-sized wild cat genus "Lynx". The name "lynx" originated in Middle English via Latin from the Greek word λύγξ, derived from the Indo-European root "leuk-" ('light, brightness') in reference to the luminescence of its reflective eyes.


The Syrian brown bear (Ursus arctos syriacus or Ursus arctos arctos) is a relatively small subspecies of brown bear native to the Middle East and the Caucasus mountain range.


The sloth bear (Melursus ursinus) is a myrmecophagous bear species native to the Indian subcontinent. It feeds on fruits, ants and termites. It is listed as vulnerable on the IUCN Red List, mainly because of habitat loss and degradation.It has also been called "labiated bear" because of its long lower lip and palate used for sucking up insects. It has a long, shaggy fur, a mane around the face, and long, sickle-shaped claws. It is lankier than brown and Asian black bears.It shares features of insectivorous mammals and evolved during the Pleistocene from the ancestral brown bear through divergent evolution.Sloth bears breed during spring and early summer and give birth near the beginning of winter. When their territories are encroached upon by humans, they sometimes attack them. Historically, humans have drastically reduced these bears' habitat and diminished their population by hunting them for food and products such as their bacula and claws. Sloth bears have been tamed and used as performing animals and as pets.


A mongoose is a small terrestrial carnivorous mammal belonging to the family Herpestidae. This family is currently split into two subfamilies, the Herpestinae and the Mungotinae. The Herpestinae comprises 23 living species that are native to southern Europe, Africa and Asia, whereas the Mungotinae comprises 11 species native to Africa.The Herpestidae originated about in the Early Miocene and genetically diverged into two main genetic lineages between 19.1 and .


Calosoma is a genus of large ground beetles that occur primarily throughout the Northern Hemisphere, and are referred to as caterpillar hunters or caterpillar searchers. Many of the 167 species are largely or entirely black, but some have bright metallic coloration. They produce a foul-smelling spray from glands near the tip of the abdomen. They are recognizable due to their large thorax, which is almost the size of their abdomen and much wider than their head.


The longhorn beetles (Cerambycidae), also known as long-horned or longicorns, are a large family of beetles, with over 35,000 species described. Most species are characterized by extremely long antennae, which are often as long as or longer than the beetle's body. In various members of the family, however, the antennae are quite short (e.g., "Neandra brunnea") and such species can be difficult to distinguish from related beetle families such as the Chrysomelidae. The scientific name of this beetle family goes back to a figure from Greek mythology: after an argument with nymphs, the shepherd Cerambus was transformed into a large beetle with horns.


An elater is a cell (or structure attached to a cell) that is hygroscopic, and therefore will change shape in response to changes in moisture in the environment. Elaters come in a variety of forms, but are always associated with plant spores. In many plants that do not have seeds, they function in dispersing the spores to a new location. Mosses do not have elaters, but peristomes which change shape with changes in humidity or moisture to allow for a gradual release of spores.


Calliphora vicina is a member of the family Calliphoridae, which includes blow flies and bottle flies. These flies are important in the field of forensic entomology, being used to estimate the time of a person's death when a corpse is found and then examined. "C. vicina" is currently one of the most entomologically important fly species for this purpose because it arrives at and colonizes a body following death in consistent timeframes.


Drosophila () is a genus of flies, belonging to the family Drosophilidae, whose members are often called "small fruit flies" or (less frequently) pomace flies, vinegar flies, or wine flies, a reference to the characteristic of many species to linger around overripe or rotting fruit. They should not be confused with the Tephritidae, a related family, which are also called fruit flies (sometimes referred to as "true fruit flies"); tephritids feed primarily on unripe or ripe fruit, with many species being regarded as destructive agricultural pests, especially the Mediterranean fruit fly.One species of "Drosophila" in particular, "D. melanogaster", has been heavily used in research in genetics and is a common model organism in developmental biology. The terms "fruit fly" and "Drosophila" are often used synonymously with "D. melanogaster" in modern biological literature. The entire genus, however, contains more than 1,500 species and is very diverse in appearance, behavior, and breeding habitat.


Mason bee is a name now commonly used for species of bees in the genus Osmia, of the family Megachilidae. Mason bees are named for their habit of using mud or other "masonry" products in constructing their nests, which are made in naturally occurring gaps such as between cracks in stones or other small dark cavities. When available, some species preferentially use hollow stems or holes in wood made by wood-boring insects.Species of the genus include the orchard mason bee "O. lignaria", the blueberry bee "O. ribifloris", the hornfaced bee "O. cornifrons", and the red mason bee "O. bicornis". The former two are native to the Americas, the third to eastern Asia, and the latter to the European continent, although "O. lignaria" and "O. cornifrons" have been moved from their native ranges for commercial purposes. Over 300 species are found across the Northern Hemisphere. Most occur in temperate habitats within the Palearctic and Nearctic zones, and are active from spring through late summer."Osmia" species are frequently metallic green or blue, although many are blackish and at least one rust-red. Most have black ventral scopae which are difficult to notice unless laden with pollen. They have arolia between their claws, unlike "Megachile" or "Anthidium" species.Historically, the term mason bee has also been used to refer to bees from a number of other genera under Megachilidae such as "Chalicodoma", most notably in "The Mason-Bees" by Jean-Henri Fabre and his translator Alexander Teixeira de Mattos in 1914.


A wasp is any insect of the narrow-waisted suborder Apocrita of the order Hymenoptera which is neither a bee nor an ant; this excludes the broad-waisted sawflies (Symphyta), which look somewhat like wasps, but are in a separate suborder. The wasps do not constitute a clade, a complete natural group with a single ancestor, as bees and ants are deeply nested within the wasps, having evolved from wasp ancestors. Wasps that are members of the clade Aculeata can sting their prey.The most commonly known wasps, such as yellowjackets and hornets, are in the family Vespidae and are eusocial, living together in a nest with an egg-laying queen and non-reproducing workers. Eusociality is favoured by the unusual haplodiploid system of sex determination in Hymenoptera, as it makes sisters exceptionally closely related to each other. However, the majority of wasp species are solitary, with each adult female living and breeding independently. Females typically have an ovipositor for laying eggs in or near a food source for the larvae, though in the Aculeata the ovipositor is often modified instead into a sting used for defense or prey capture. Wasps play many ecological roles. Some are predators or pollinators, whether to feed themselves or to provision their nests. Many, notably the cuckoo wasps, are kleptoparasites, laying eggs in the nests of other wasps. Many of the solitary wasps are parasitoidal, meaning they lay eggs on or in other insects (any life stage from egg to adult) and often provision their own nests with such hosts. Unlike true parasites, the wasp larvae eventually kill their hosts. Solitary wasps parasitize almost every pest insect, making wasps valuable in horticulture for biological pest control of species such as whitefly in tomatoes and other crops.Wasps first appeared in the fossil record in the Jurassic, and diversified into many surviving superfamilies by the Cretaceous. They are a successful and diverse group of insects with tens of thousands of described species; wasps have spread to all parts of the world except for the polar regions. The largest social wasp is the Asian giant hornet, at up to 5 (cm) in length; among the largest solitary wasps is a group of species known as tarantula hawks, along with the giant scoliid of Indonesia ("Megascolia procer"). The smallest wasps are solitary parasitoid wasps in the family Mymaridae, including the world's smallest known insect, with a body length of only 0.139 (mm), and the smallest known flying insect, only 0.15 (mm) long.Wasps have appeared in literature from Classical times, as the eponymous chorus of old men in Aristophanes' 422 BC comedy "The Wasps", and in science fiction from H. G. Wells's 1904 novel "The Food of the Gods and How It Came to Earth", featuring giant wasps with three-inch-long stings. The name 'Wasp' has been used for many warships and other military equipment.


Grasshoppers are a group of insects belonging to the suborder Caelifera. They are among what is possibly the most ancient living group of chewing herbivorous insects, dating back to the early Triassic around 250 million years ago.Grasshoppers are typically ground-dwelling insects with powerful hind legs which allow them to escape from threats by leaping vigorously. As hemimetabolous insects, they do not undergo complete metamorphosis; they hatch from an egg into a nymph or "hopper" which undergoes five moults, becoming more similar to the adult insect at each developmental stage. The grasshopper hears through the tympanal organ which can be found in the first segment of the abdomen attached to the thorax; while its sense of vision is in the compound eyes, the change in light intensity is perceived in the simple eyes (ocelli). At high population densities and under certain environmental conditions, some grasshopper species can change color and behavior and form swarms. Under these circumstances, they are known as locusts.Grasshoppers are plant-eaters, with a few species at times becoming serious pests of cereals, vegetables and pasture, especially when they swarm in the millions as locusts and destroy crops over wide areas. They protect themselves from predators by camouflage; when detected, many species attempt to startle the predator with a brilliantly-coloured wing-flash while jumping and (if adult) launching themselves into the air, usually flying for only a short distance. Other species such as the rainbow grasshopper have warning coloration which deters predators. Grasshoppers are affected by parasites and various diseases, and many predatory creatures feed on both nymphs and adults. The eggs are subject to attack by parasitoids and predators.Grasshoppers have had a long relationship with humans. Swarms of locusts can have devastating effects and cause famine, having done so since Biblical times. Even in smaller numbers, the insects can be serious pests. They are used as food in countries such as Mexico and Indonesia. They feature in art, symbolism and literature. The study of grasshopper species is called acridology.