A genus of small African hippopotamuses, sometimes called pygmy hippos, that live in rivers and forests of West Africa.
From Greek 'choiros' (pig) and 'opsis' (appearance), literally meaning 'pig-like appearance.' Named by European naturalists who thought the small hippo resembled a pig more than its larger relative.
Pygmy hippos were so rare and elusive that scientists didn't actually study live specimens until the 1910s—this animal kept its secrets from the world so well that Europeans nearly called it a giant pig!
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