Description: The quokka (Setonix brachyurus) is a small marsupial native to Australia, known for its friendly nature and adorable appearance, earning it the nickname ‘the world’s happiest animal’. This marsupial belongs to the Macropodidae family, which includes kangaroos and wallabies. Quokkas are small in size, with a robust body measuring between 40 and 54 cm in length and weighing between 2.5 and 5 kg. Their fur is light brown to gray, and they have a distinctive face with large eyes and an expression that seems to smile. These animals are herbivores, primarily feeding on grasses, leaves, and shoots. Quokkas are nocturnal and tend to be more active at night, helping them avoid the daytime heat. Their natural habitat is found on the islands and coasts of southwestern Australia, particularly on Rottnest Island, where they are a popular tourist attraction. The sociable nature of quokkas allows them to interact with humans, contributing to their fame on social media, where photos of their smiles have captured the attention of millions. However, despite their popularity, quokkas face threats due to habitat loss and predation by introduced species, leading to conservation efforts to protect this charming species.