Hippopotamidae

Hippopotamidae is a group of even-toed ungulate mammals. 
There are two living species of Hippopotamus.

Taxonomy
 Family Hippopotamidae
 Hippopotamus (Hippopotamus amphibius)
 Pygmy Hippopotamus (Hexaprotodon liberiensis or Choeropsis liberiensis)


 Other websites 


Category:Even-toed ungulates