Crotalus viridis
Videos
The prairie rattlesnake or Great Plains rattlesnake is a venomous pit viper species native to the western United States, southwestern Canada, and northern Mexico. Currently, two subspecies are recogni
Crotalus viridis, closeup of head
Prairie rattlesnake (C. v. viridis), Hidalgo County, New Mexico (5 Sep 2014)
A Hopi rattlesnake (C. v. nuntius) in a defensive posture
Crotalus cerberus
Videos
Crotalus cerberus is a venomous pit viper species found in the southwestern United States. It is known as the Arizona black rattlesnake, black rattlesnake, and several other common names.
An Arizona black rattlesnake at Phoenix Zoo.