Arizona Black Rattlesnake (Crotalus cerberus)

The Arizona Black Rattlesnake is a venomous species found in Arizona, New Mexico, and some regions of Mexico. Their black or dark grey coloration allows them to blend seamlessly into the surroundings. 

They prey on small mammals such as mice, rats, squirrels, birds, or lizards and have a unique behavior of 'tail-flagging' as a warning to potential predators. Although encounters with this species are rare, always observe them from a safe distance.