hippopotamus, hippo, river horse, Hippopotamus amphibius
['breakwater, groin, groyne, mole, bulwark, seawall, jetty', 'Irish water spaniel', 'barracouta, snoek', 'pineapple, ananas', 'wombat', 'howler monkey, howler', 'axolotl, mud puppy, Ambystoma mexicanum']