A kangaroo is a hopping marsupial, of the family Macropodidae. Kangaroos are found in Australia, Tasmania, and New Guinea. They have powerful kind legs, long feet, short forelimbs, and long muscular tails for maintaining balance. The female has a pouch where she keeps her newborn kangaroo (joey). These jumpers are the chief grazers of the Australian plains, and they also live in herds. Large male kangaroos can reach a height of 7 feet tall, and weight over 200 pounds. Smaller members of the kangaroo family include the rabbit-sized wallabies and pademelons.