axolotl, mud puppy, Ambystoma mexicanum
['loggerhead, loggerhead turtle, Caretta caretta', 'American lobster, Northern lobster, Maine lobster, Homarus americanus', 'hippopotamus, hippo, river horse, Hippopotamus amphibius', 'beaver', 'amphibian, amphibious vehicle', 'otter', 'tailed frog, bell toad, ribbed toad, tailed toad, Ascaphus trui']