hippopotamus, hippo, river horse, Hippopotamus amphibius
['horned viper, cerastes, sand viper, horned asp, Cerastes cornutus', 'electric ray, crampfish, numbfish, torpedo', 'hamster', 'ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus', 'piggy bank, penny bank', 'hook, claw', 'bustard']