The hippopotamus has no other family members, as they are the only living members of their family, Hippopotamidae.
There are two living species of hippos: the pygmy hippo, and the common hippo. The pygmy hippos live in the forests of West Africa. Hippos have similarities with pigs, who may be their closest living relatives on earth. They are cetaceans, meaning they live in water, much like a whale or dolphin!
Hippopotamuses have short, stumpy legs and barrel shaped bodies. Their heads are large. They have a characteristic broad mouth, and nostrils placed at the top of their snouts. A hippo’s stomach has three chambers.
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