Kangaroos belong to an order of mammals called Marsupials. In most marsupials, females have abdominal pouches in which the embryonic young continue their development after birth. They live in the forests and grasslands of Australia and Tasmania and other islands near Australia.
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Kangaroos live in groups made of 8-25 individuals, called mobs. A mob is made up of a male, several females and the young. For a male to become the leader of the mob he has to fight outsiders and younger males. They fight by standing on their rear legs and attacking with their front legs but can also balance their whole body on their strong tail, lift their back legs off the ground and hit out with the sharp claws of their rear feet. There are more kangaroos in Australia than humans. This is mostly due to the clearing of bushlands for pasture and increased availability of surface water since European settlement.Source
Goodfellow’s Tree Kangaroo
Like other tree-kangaroos, Goodfellow's Tree-kangaroo is quite different in appearance from terrestrial kangaroos. The forelimbs and hindelimbs are almost of equal length and can move independently of one another. It has a long tail for balance, the hindefeet are broad and shorter than those of its land dwelling cousins. All of these features help it with a predominantly arboreal existence. In trees it is bold and agile but on the ground it is slow and clumsy, moving at about walking pace and hopping awkwardly, leaning its body far forward to balance the heavy tail. Source

Albino Kangaroo
Albino kangaroos, or white kangaroos are quite rare. In an albino kangaroo, the normal colouring is absent,
and the kangaroo has white fur and sometimes (not always) pink eyes. As with all albino animals, albino kangaroos
have a reduced amount of melanin pigment in the eyes, skin, and hair.
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