hippopotamus, hippo, river horse, Hippopotamus amphibius
['baboon', 'barracouta, snoek', 'sea cucumber, holothurian', 'American egret, great white heron, Egretta albus', 'American black bear, black bear, Ursus americanus, Euarctos americanus', 'hamster', 'cowboy hat, ten-gallon hat']