Hippo Yawn. The Common Hippopotamus (Hippopotamus Amphibius), Or Hippo, Is A Large, Mostly Herbivorous Mammal In Sub-Saharan Africa. The Common Hippopotamus Is Semiaquatic, Inhabiting Rivers, Lakes And Mangrove Swamps, Where Territorial Bulls Preside Over A Stretch Of River And Groups Of Five To 30 Females And Young. During The Day, They Remain Cool By Staying In The Water Or Mud.

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africa amphibius animal big black bulls common great herbivorous hippo hippopotamus lakes large mammal portrait river rivers safari tusk water white wildlife yawn