Arizona's WildLife

The Arizona black rattlesnake (Crotalus cerberus), also known as the black phase of the Arizona black-tailed rattlesnake, is a medium-sized venomous snake native to Arizona’s mountainous regions. It is distinguished by its dark black or charcoal coloration and the characteristic rattle at the end of its tail, which it uses as a warning signal to potential threats. This species is primarily nocturnal during the hottest months, seeking shelter under rocks, logs, or in burrows during the day, and emerges to hunt rodents, lizards, and small mammals at night. As a venomous predator, it plays an important ecological role in controlling prey populations, while its secretive behavior makes direct encounters rare. Observing this snake from a safe distance offers insight into the diversity of Arizona’s mountain reptile fauna.