Fauna of New Guinea Guinea. However, the tree-kangaroos, which are mostly endemic to New Guinea, are different in appearance and behaviour. As suggested by their name, they are arboreal. They have long, thick tails which enable them to balance in trees, and large, strong forearms for gripping to trees. Two species of tree kangaroos are also found in Australia, they are believed to have migrated from New Guinea during the Pleistocene. The cuscus, family Phalangeridae, are a family of marsupials closely related to the possums of Australia. The cuscus have evolved in New Guinea, and are found throughout the island. Most species are dark
Herding dog conformation shows they usually form a separate group. Australia has the world's largest cattle stations and sheep stations and some of the best-known herding dogs, such as the Koolie, Kelpie, Red and Blue Heelers are bred and found there. The competitive dog sport in which herding dogs move animals around a field, fences, gates, or enclosures as directed by their handlers is called a "sheepdog trial", "herding test" or "stockdog trial" depending on the area. Such events are particularly associated with hill farming areas, where sheep range widely on largely unfenced land. These trials are popular in the United Kingdom,