A wallaroo is an Australian macropod with its size between the big kangaroos and the small wallabies. The name "wallaroo" is a mix of wallaby and kangaroo. Most wallaroos are smaller than a kangaroo, and live in open, rocky country. Wallaroo means "rock kangaroo". There are three types of wallaroo. They all stand the same way: wrists raised, elbows close into the body, and shoulders back, and all have a large, black nose.