Hippopotamus Hippopotamus amphibius The hippopotamus is one of the world’s largest and heaviest land animals.It lives partly in water and partly on land.Although strictly a plant eater,the hippopotamus has massive jaws with formidable tusks.Hippos have an unpredictable temperament and are capable of biting through small boats and slicing crocodiles in two.Hippos trample riverbanks and lakeshores,creating a maze of waterside paths and wallows that they use to get access to the plants they eat.Hippos spend their days lazing in or near water,emerging after dark to feed