The kangaroo is an indigenous marsupial that lives in Australia and the Indonesian island of New Guinea. Although kangaroos often gather in groups, kangaroos are generally quite solitary mammals. In the company of other kangaroos, they are social animals. Kangaroos have a deep pouch on their front in which they can carry their young. A baby kangaroo is called a joey. Kangaroos eat plants, nuts, berries, and insects, which the kangaroos forage for in the arid wilderness. Dimensions: 12.4 x 4.3 x 10 centimeters.