Quokkas are small marsupials native to Australia, primarily found on Rottnest Island and a few other locations. They belong to the macropod family, which also includes kangaroos and wallabies. Quokkas are known for their round faces and friendly demeanor, often appearing to smile, which has made them popular among tourists. These nocturnal animals are herbivores, primarily feeding on grasses and leaves. Quokkas are about the size of a domestic cat, with a stocky build and short tails. They are social creatures, often seen in groups, and have adapted well to their island habitat, where they face few natural predators.