Wallaroos are members of the kangaroo family so, like kangaroos, they hop and bound. Wallaroos' legs are specially designed for hopping and bounding. They are unable to move i
…ndependently for walking, and the long hind feet are structured for long leaps rather than running. Wallaroos have large, strong tendons in their hind legs which act as "springs". Every time a wallaroo's feet hits the ground, some of the energy is shifted to the rubber, stored there, then recycled in an elastic bounce. Wallaroos are more stoutly built than the larger kangaroos, and they are able to bound up and down steep and rocky slopes agilely, expending very little energy. ( Full Answer )