If you have taken a photo of a snake in Maricopa County (Greater Phoenix area) and you'd like to submit the picture to this photo gallery, here's how you do it.
© Dr. Brendan P. O'Connor, used with permission. Some descriptions obtained from AZ PARC.
The Black-Tailed Rattlesnake (Crotalus molossus) is a large rattler with harmful venom. It' can get to about 4 feet long. The tail is black, which is how you can differentiate it from the Western Diamondback Rattlesnake. It's a ground dwelling pit-viper.
A Field Guide to Amphibians and Reptiles of Maricopa County will help you to learn more about and identify snakes that are found in central Arizona.