Pygmy hippos share the same general form as a hippopotamus. They have a skeleton, with four stubby legs and four toes on each foot, supporting a portly frame. The pygmy hippo, however, is only half as tall as the hippopotamus and weighs less than 1/4 as much as its larger cousin. Adult pygmy hippos stand about high at the shoulder, are in length and weigh . Their lifespan in captivity ranges from 30 to 55 years, though it is unlikely that they live this long in the wild.