NNTRC Snakes

Scientific Name

Crotalus lepidus lepidus

Common Name 

Mottled Rock Rattlesnake
Snake

Physical Characteristics

Length, 16-28 in. (40-71 cm). The background color can vary greatly and frequently resembles the surrounding rocks. Color ranges include various shades of grey, tan, rust, and pink. The narrow somewhat serrated crossbands are usually brown, grey or black and extend the length of the body to the tail. There is a variable amount of dark speckling between the crossbands.

Geographic Range (USA & Mexico)

Extreme southeastern New Mexico (USA) southward through southwest Texas (USA) into the Mexican states of Chihuahua, Coahuila, Nuevo León, San Luis Potosí, and Zacatecas.

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Habitat:

A predominantly mountain snake found in arid or semiarid rocky areas along hillsides and arroyos. Can be found from 300 to 2900 m.

Diet:

Frogs, snakes, lizards, and small mammals.

Venom:

Hemorrhagins are the predominant toxins. However, some populations have a neurotoxic venom component.

Remarks:

Rock Rattlesnakes are relative inoffensive and will usually lie motionless until agitated. Once provoked they try to seek safety in the nearest rock shelter.

This page was last updated on: August 18, 2016