![42826171_2289406638013233_38238111488603](https://static.wixstatic.com/media/3b63fc_3fd88bd44e2942f98de5aa4a7ac150b5~mv2.jpg/v1/fill/w_540,h_356,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/42826171_2289406638013233_38238111488603.jpg)
Photo credit:
Eric Centenero Alcala
Common name
Chihuahua Ridge-nosed Rattlesnake
Scientific name
Crotalus willardi silus
Conservation Status
Least Concern
Federal and State Protections
Federally Protected (MX)
Range Map
Countries of Occurrence
Mexico, US
Adult size
15in (38cm) - 19.6in (50cm)
States or Providence
Sonora (MX), Chihuahua (MX), New Mexico (US)
Counties
Species Description
The Chihuahua ridge-nosed rattlesnake is a small species of rattlesnake found in the northern parts of the Sierra Madre Occidental mountains in Mexico and a small region of the Animas Mountains in the US. It has the largest range of any C. willardi subspecies. They favor temperate pine-oak forests with streams or creek-beds, and are most active during the rainy season. This species is found at elevations of 5500 to 8000ft (1676 -2438m) above sea level.
A generalist predator, this species targets a wide variety of prey, including lizards, rodents and even centipedes.