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Eastern Diamondback
Rattlesnake
Crotalus adamanteus







Western Diamondback
Rattlesnake
Crotalus atrox








Sidewinder
Crotalus cerastes









Arizona Black Rattlesnake
Crotalus cerberus










Canebrake Rattlesnake
Crotalus horridus










Banded Rock Rattlesnake
Crotalus l. klauberi










Mottled Rock Rattlesnake
Crotalus l. lepidus








Speckled Rattlesnake
Crotalus mitchellii









Black-Tailed Rattlesnake
Crotalus m. molossus










Southern Pacific
Rattlesnake
Crotalus o. helleri








Midget Faded Rattlesnake
Crotalus o. concolor








Red Rattlesnake
Crotalus ruber









Mojave Rattlesnake
Crotalus scutulatus









Tiger Rattlesnake
Crotalus tigris









Prairie Rattlesnake
Crotalus v. viridis









Arizona Ridgenose
Rattlesnake
Crotalus w. willardi









Desert Massasauga
Sistrurus c. edwardsi









Dusky Pygmy Rattlesnake
Sistrurus miliarius barbouri









Carolina Pygmy Rattlesnake
Sistrurus miliarius miliarius








Western Pygmy Rattlesnake
Sistrurus miliarius streckeri