Water chevrotain : A large West African chevrotain (Hyaemoschus aquaticus). It has a larger body and shorter legs than the other allied species. Called also water deerlet.

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Taxonomy
water chevrotain, species, Hyemoschus aquaticus, deer, Family Bovidae, free encyclopedia, subfamily Bovinae, Kingdom, Phylum, Large family, least concern, IUCN, Artiodactyla, tropical Africa, West Africa, vulnerable species, Suborder Ruminantia, Family Cervidae.

Defination from the web:
water chevrotain (Hyemoschus aquaticus), also known as the fanged deer, is a small ruminant found in tropical Africa. ... The water chevrotain is found mostly in coastal West Africa and the rainforests of central Africa. ...