Por: Giuliano Marcellino, Julian Massei y Augusto Demo
Los hippos son unos mamíferos grandes of short, stubby legs and barrel-shaped bodies. They have a large head with a wide mouth and nostrils located on top of the snout. As pigs have four toes on the foot, but unlike these, all fingers used for walking. The hippopotamids are ungulates, but unlike most of these animals, and have no hoof in place of resilient pads tissue.