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 sheep to graze while preventing them from eating valuable crops and wandering onto roads. Herding instincts and trainability can be measured when introducing a dog to livestock or at noncompetitive herding tests. Individuals exhibiting basic herding instincts can be trained to compete in herding trials. In Australia, New Zealand and the United States herding dogs are known as "working dogs" irrespective of their breeding. Some herding breeds work well with any kind of animals; others have been bred for generations to work with specific kinds of animals and have developed physical characteristics or styles of working that enhance their ability