The common spotted cuscus (Spilocuscus maculatus) is a marsupial related to possums. Marsupials are animals that give birth to young after a short gestation period – in the case of the common spotted cuscus 14-20 days. The young then finish off their development with a long period of suckling on the teat. Well-known marsupials include kangaroos, koalas and wombats. The common spotted cuscus is found in the forests of the far northeastern tip of tropical Australia, as well as the rainforests of New Guinea. They are predominantly arboreal, meaning they spend most of their lives in trees.