Western Black-tailed Rattlesnake (Crotalus molossus)—Southeast Arizona
Western Diamond-backed Rattlesnake (Crotalus atrox)—West Texas
Mottled Rock Rattlesnake (Crotalus lepidus lepidus)—West Texas
Ornate Cat-eyed Snake (Leptodeira ornata)—Limón Province, Costa Rica
Gray-banded Kingsnake (Lampropeltis alterna)—West Texas
Tiger Rattlesnake (Crotalus tigris)—Southeast Arizona
Central American Jumping Pit Viper (Metlapilcoatlus mexicanus)—Heredia Province, Costa Rica
Ujarran Hognose Viper (Porthidium volcanicum)—Puntarenas Province, Costa Rica
Texas Coral Snake (Micrurus tener)—North Texas
Eyelash Viper (Bothriechis schlegelii)—Heredia Province, Costa Rica
Eyelash Viper (Bothriechis schlegelii)—Osa Peninsula, Costa Rica
Ringed Tree Boa (Corallus annulatus)—Heredia Province, Costa Rica
Giant Parrot Snake (Leptophis ahaetulla)—Heredia Province, Costa Rica
Tropical Flat Snake (Siphlophis compressus)—Puntarenas Province, Costa Rica
Southwestern Speckled Rattlesnake (Crotalus pyrrhus)—Southern California
Side-striped Palm Pit Viper (Bothriechis lateralis)—Alajuela Province, Costa Rica
Arizona Ridgenose Rattlesnake (Crotalus willardi willardi)—Southeast Arizona
Arizona Black Rattlesnake (Crotalus cerberus)—Southeast Arizona
Red Diamond Rattlesnake (Crotalus ruber)—Southern California
