Gary Nafis of californiaherps.com
Federal and State Protections
Countries of Occurrence
United States of America
States or Providence
This medium-sized rattlesnake can be found in southern California and in Nevada. While it is more frequently found in hilly or mountainous areas with scattered rock formations, it can be found in a variety of other habitats and elevations. This species breeds in mid-spring and will give birth to 3-5 young.
Fun fact: In 2007, the panamint rattlesnake was elevated to its own species, Crotalus stephensi, after being a subspecies of the speckled rattlesnake, Crotalus mitchellii. This was determined through DNA and morphology, and the study concluded that this species of rattlesnake did not interbreed with the southwestern speckled rattlesnake. It's important to distinguish isolated species to further influence conservation of biodiversity!