Before you go, we thought you'd like these...  There is no doubt quokkas are the world's cutest and happiest animal.  So here are some facts about your new best friend:  SEE ALSO: These animals get a bad rap, but here's why we need them  The marsupials are about the size of a cat and are primarily found on Rottnest Island near Perth, Australia.  Quokkas are nocturnal and like to live in tall grasses, but they aren't afraid to come up to people.  They are also herbivores and like to eat leaves and plants, but they can survive for long period of time without water by living off the fat stored in their tails.  Though they look adorable and cuddly, the cousin to the kangaroo have sharp nails, which they use to help climb trees.  These poor guys are considered vulnerable because of declining populations.  So it you want to take a picture with a smiling quokka, make sure you don't tough. Visitors can be fined for handling one of them.  RELATED: These cute, sleeping animals just want to take a nap in peace:  kangaroo sleeping in hot summer afternoon Australian.  happy dog lying upside down, eyes closed and smiling with paw in mouth  Young polar bear sleeps on rocks at the zoo  Close up of cygnet sleeping.  Bulldog lying down on back  Wolong Nature Reserve, Sichuan, China  A domestic pet cat sleeping  Dog sleeps upside-down on a couch that matches her coat.  More from AOL.com: Scientists perfect shampoo bottle that empties to last drop Remember what the Internet looked like in the 1990s? The dark reason why you should always take pictures of your hotel room
These little guys are endangered and only live on an island off the coast of Australia, but they are bound to make you want to go visit them.