A kangaroo will leave its natural surroundings from 6 to 8 years. There are 40 different kinds of marsupials in the kangaroo family. Some of them are found on New Guinea and on nearby islands, but most of them are only found on Australia. The smallest member of the kangaroo family is the musk rat-kangaroo. The musk rat-kangaroo is about the size of rabbit.
Tree kangaroos spend most of their time up in trees.
A tree kangaroos front and hind legs are the same length, the other members in the kangaroo families aren't. Hunters have killed millions of kangaroos for their hide and meat. Kangaroo hide is made into many things like shoes and handbags, and the meat is used for making dog food. Australian ranchers have also killed lots of kangaroos. These ranchers say that the animals reduce the supply of grass for their livestock.