sidewinder, horned rattlesnake, Crotalus cerastes
['axolotl, mud puppy, Ambystoma mexicanum', 'African crocodile, Nile crocodile, Crocodylus niloticus', 'fiddler crab', 'breakwater, groin, groyne, mole, bulwark, seawall, jetty', 'marmot', 'common iguana, iguana, Iguana iguana', 'hourglass']