hippos

The common hippopotamus (Hippopotamus amphibius), or hippo is a large semi-aquatic mammal that is found wallowing in the rivers and lakes across sub-Saharan Africa. The name comes from the ancient Greek for “river horse” (ἱπποπόταμος). But hippos are not related to horses at all—in fact, their closest living relatives may be pigs or whales and … Read more