Speckled Rattlesnake
Crotalus mitchellii • Order: Squamata, Suborder: Serpentes, Family: Viperidae, Subfamily: Crotalinae, Genus: Crotalus, Species: C. mitchellii
Found in the southwestern United States (California, Nevada, Utah, Arizona) and northwestern Mexico (Baja California and Sonora), inhabiting arid desert regions, rocky canyons, and mountainous terrain.
Look up Speckled Rattlesnake in the Snake Encyclopedia →Family
Order: Squamata, Suborder: Serpentes, Family: Viperidae, Subfamily: Crotalinae, Genus: Crotalus, Species: C. mitchellii
Conservation
IUCN Red List status is Least Concern, though local populations face habitat fragmentation, urbanization, and intentional persecution.
Physical Description
Displays a variable coloration of grey, tan, yellowish, or pinkish background overlaid with dark, rough-edged blotches along the back. The head is broad and distinct from the neck, featuring vertical pupils and keeled scales giving a rough texture. A rattle is visible at the tail tip.
Size & Dimensions
The specimen shown appears to be a juvenile or sub-adult, roughly 40-60 cm in length. Adults typically range from 60 to 100 cm, with maximum recorded lengths reaching around 137 cm.
Habitat
Typically occupies arid and semi-arid environments, rocky desert flats, canyons, and rocky hillsides up to elevations around 2,500 meters. Often found near rocky outcrops, boulder piles, and washes where micro-habitats offer cover.
Diet & Feeding
Predominantly carnivorous, feeding on small mammals such as rodents, lizards, and occasionally birds. It employs an ambush hunting strategy, waiting motionlessly for prey to pass within striking range.
Reproduction
Viviparous (gives live birth). Mating typically occurs in the spring, and females give birth to litters averaging 3 to 10 young in the late summer or early autumn.
Look-alikes
Frequently confused with other rattlesnake species within its range such as the Sidewinder (Crotalus cerastes) and Speckled Rattlesnake variants, distinguished by scale counts, facial markings, and regional distribution.
Conservation Status
IUCN Red List status is Least Concern, though local populations face habitat fragmentation, urbanization, and intentional persecution.
Cultural Significance
Plays an important ecological role as a population controller of small rodents and mammals within its native desert ecosystems. Appreciated by herpetologists and conservationists for its unique adaptations to extreme arid environments.
Notable Features
Remarkable camouflage coloration that closely matches the granite or multicolored rocks of its native desert habitats. Possesses heat-sensing facial pits between the eye and nostril used to locate endothermic prey.