horned viper, cerastes, sand viper, horned asp, Cerastes cornutus
['common iguana, iguana, Iguana iguana', 'king crab, Alaska crab, Alaskan king crab, Alaska king crab, Paralithodes camtschatica', 'African crocodile, Nile crocodile, Crocodylus niloticus', 'sturgeon', 'black widow, Latrodectus mactans', 'ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus', 'axolotl, mud puppy, Ambystoma mexicanum']