hippopotamus, hippo, river horse, Hippopotamus amphibius
['boa constrictor, Constrictor constrictor', 'nipple', 'sea cucumber, holothurian', 'goldfish, Carassius auratus', 'sea anemone, anemone', 'orangutan, orang, orangutang, Pongo pygmaeus', 'lakeside, lakeshore']