There are between 32 and 45 different species of rattlesnakes known to science, and Arizona is home to many of them.
This includes the sidewinder rattlesnake, which is renowned for its horns and side-winding movements, as well as the western diamond-backed rattlesnake, which is the largest rattlesnake in the West. Four species are under special protection in Arizona, according to the Arizona Game and Fish Department: the massasauga rattlesnake, the twin-spotted rattlesnake, the ridge-nosed rattlesnake, and the rock rattlesnake.