Most specifically, any of six large Australasian marsupial s of the family Macropodidae.
The term is also used to refer to any of the family's 54 species. Most kangaroos graze on the Australian plains, but tree kangaroos are arboreal; they climb trees and leap from branch to branch. Kangaroos generally have long, powerful hind legs and feet and a long tail, thickened at the base. The hind legs enable their spectacular leaps and are also useful for self-defense; the tail is used for balance. The head is small, the ears large and rounded, and the fur soft and woolly. Females have one young (called a joey) annually; it is suckled in its mother's pouch for six months and often returns to be carried in the pouch later as well. The gray kangaroo, the best-known and second-largest species, can leap more than 30 ft (9 m). The red kangaroo is the largest species; the male may stand 6 ft (1.8 m) tall and weigh 200 lbs (90 kg). Millions are killed annually for their meat and hides and because they compete with livestock for forage. See also wallaby ; wallaroo .
Western gray kangaroo ( Macropus fuliginosus ).
Warren Garst/Tom Stack and Associates