Western diamond-back rattlesnake (Western diamondback Rattlesnake) (Crotalus atrox) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Hypomelanistic Western Diamond-Back Rattlesnake (Western Diamondback Rattlesnake) (Crotalus atrox) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Mojave rattlesnake (Mohave Rattlesnake) (Mojave Diamond Rattlesnake) (Desert Diamond Back) (Crotalus scutulatus) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America

Hypomelanistic Western diamond-back rattlesnake (Western diamondback rattlesnake) (Crotalus atrox) in captivity, Arizona Sonora Desert Museum, Tucson, Arizona, United States of America, North America