A Quokka is a small wallaby species native to Western Australia. It is known for its cute and friendly appearance, often described as the world's happiest animal. Quokkas are primarily herbivorous and feed on grasses, leaves, and bark. They are also known for their ability to survive in harsh and unforgiving environments. Quokkas have become a popular tourist attraction on Rottnest Island, where visitors can interact with them and take selfies.