Kangaroo the sniffing gains much information from smell cues. This behaviour enforces social cohesion without consequent aggression. During mutual sniffing, if one kangaroo is smaller, it will hold its body closer to the ground and its head will quiver, which serves as a possible form of submission. Greetings between males and females are common, with larger males being the most involved in meeting females. Most other non-antagonistic behaviour occurs between mothers and their young. Mother and young reinforce their bond though grooming. A mother will groom her young during or after it is suckling. A joey will nuzzle its mother's pouch
Goodfellow's tree-kangaroo Goodfellow's tree-kangaroo Goodfellow's tree-kangaroo ("Dendrolagus goodfellowi") also called the ornate tree-kangaroo, belongs to the family Macropodidae, which includes kangaroos, wallabies and their relatives, and the genus "Dendrolagus", with eleven other species. The species is native to the rainforests of New Guinea, and the border of central Irian Jaya in Indonesia. Under the IUCN classification, the species is listed as Endangered, which is a result of overhunting and human encroachment on their habitat. It is named after British zoological collector Walter Goodfellow. Like other tree-kangaroos, Goodfellow's tree-kangaroo is quite different in appearance from terrestrial kangaroos. Unlike its land dwelling cousins, its