In fact, one of the defense mechanisms of these insects, crypsis, involves their taking their resemblance to twigs as far as it will go.
Siamese fighting fish are as beautiful, but this isn't the reason they were first domesticated by us humans.
Ever notice how many animals have lighter fur on their bellies than on their backs? Think about it. Cats and dogs often have lighter-colored bellies. Deer, foxes, wolves, coyotes, chipmunks, you get the idea. Why? Learn more on this Moment of Science.
Is a fever always bad? Find out on this Moment of Science.