mask
['horned viper, cerastes, sand viper, horned asp, Cerastes cornutus', 'chambered nautilus, pearly nautilus, nautilus', 'axolotl, mud puppy, Ambystoma mexicanum', 'bathing cap, swimming cap', 'Gila monster, Heloderma suspectum', 'bearskin, busby, shako', 'sidewinder, horned rattlesnake, Crotalus cerastes']