axolotl, mud puppy, Ambystoma mexicanum
['three-toed sloth, ai, Bradypus tridactylus', 'rhinoceros beetle', 'American lobster, Northern lobster, Maine lobster, Homarus americanus', 'hermit crab', 'Dungeness crab, Cancer magister', 'fiddler crab', 'tree frog, tree-frog']