Viperidae, the Viper and Pit viper family
IUCN Least Concern.
Southwestern North America.
Arid rocky hillsides and mountain slopes.
They have the most highly varied patterns of all the rattlesnakes. They may have crossbars, hexagons, hourglasses or diamonds patterns on a background color of white, gray, salmon, brown or tan, with the whole heavily salt and pepper speckled, which gives them incredible camouflage coloration.
These rattlesnakes are heavily speckled with a “coon tail” and on indistinct pattern much like the granite rocks in which they frequently live. They can grow to 2-4 ft. in length.
Their diet consists of ground squirrels, kangaroo rats, white-footed mice, birds and lizards. They are active during the day in spring and fall, and at night during the summer.
They are preyed on by carnivores, roadrunners and birds of prey as well as kingsnakes.
Their breeding season is July to August, and females give birth to from 2-11 live young measuring 8-12″ long.