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Wildlife Encyclopedia Entry 1777569907

** The **Quokka** (Setonix brachyurus) is a small wallaby native to Western Australia, renowned for its friendly smile and unique social behavior. **CONTENT:** ### Overview The Quokka is a diminutive marsupial that inhabits the southwestern region of Western Australia, particularly on Rottnest Island and surrounding areas. Reaching a height of approximately 50-60 cm (20-24 in) and weighing between 3-6 kg (6.6-13.2 lbs), this small wallaby is a beloved and iconic Australian species. Quokkas are herbivores, feeding on leaves, grasses, and fruits, and are known for their exceptional adaptability to their environment. Quokkas are often referred to as the "world's happiest animal" due to their endearing smile, which is a result of their facial structure and relaxed demeanor. They are highly social creatures, often interacting with each other in a friendly and non-aggressive manner. This unique behavior has made Quokkas a popular attraction among tourists visiting Rottnest Island. ### History/Background The Quokka's origins date back to the Pleistocene era, with fossil records indicating that they existed as far back as 1.5 million years ago. The species was first described by British zoologist George Robert Gray in 1837. Over the years, Quokkas have faced numerous threats, including habitat destruction, predation by introduced species such as foxes and cats, and competition for resources with other native animals. In the 19th and early 20th centuries, Quokkas were hunted for their meat and fur, leading to a significant decline in their population. Conservation efforts were initiated in the mid-20th century, with the establishment of protected areas and the introduction of control measures to manage introduced predators. Today, Quokkas are considered a vulnerable species, with a stable population on Rottnest Island and a smaller population on the mainland. ### Key Information - **Diet:** Quokkas are herbivores, feeding on a variety of plants, including leaves, grasses, and fruits. - **Habitat:** Quokkas inhabit the southwestern region of Western Australia, particularly on Rottnest Island and surrounding areas. - **Social behavior:** Quokkas are highly social creatures, often interacting with each other in a friendly and non-aggressive manner. - **Conservation status:** Quokkas are considered a vulnerable species due to habitat destruction, predation by introduced species, and competition for resources. ### Significance The Quokka's unique social behavior and endearing smile have made them an iconic Australian species, attracting tourists and promoting conservation efforts. Their adaptability to their environment and ability to thrive in a variety of habitats make them an important part of Western Australia's ecosystem. The Quokka's conservation status serves as a reminder of the importance of protecting native species and their habitats. Efforts to manage introduced predators, restore habitats, and promote sustainable tourism practices have contributed to the Quokka's stable population on Rottnest Island. **INFOBOX:** - Name: **Quokka** (Setonix brachyurus) - Type: **Marsupial** - Date: **1837** (first described by George Robert Gray) - Location: **Western Australia** (Rottnest Island and surrounding areas) - Known For: **Friendly smile and unique social behavior** **TAGS:** Quokka, Marsupial, Western Australia, Rottnest Island, Conservation, Vulnerable species, Herbivore, Social behavior, Endangered species.