The quokka is a small marsupial native to Australia, particularly found on Rottnest Island and parts of the mainland. It belongs 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 and on social media. These nocturnal animals are herbivores, primarily feeding on grasses and leaves. Quokkas are about the size of a domestic cat, with a stocky body and short tail. They are social creatures, often seen in groups, and are classified as vulnerable due to habitat loss and predation by introduced species.