Small range, found from Central Arizona to Sonora, Mexico.
Terrestrial. Found in foothills and rocky canyons of deserts and grasslands.
Highly venomous - considered dangerous to humans. Easily identified by small, spade shaped head; smallest of any rattlesnake species. Large rattle on end of tail. Adult length between 18-35 inches long. Coloration occurs in shades of gray, lavender, pink, brown, yellow, or orange. Crossbands on anterior end of body. Dark cheek stripe on the head with relatively small eyes with elliptical pupils.
Learn more with Schechter Natural History's Guide to Reptiles and Amphibians