Photo credit:

Bryan Hughes (

Common name

Northern Black-tailed Rattlesnake

Scientific name

Crotalus molossus molossus

Conservation Status

Federal and State Protections

Countries of Occurrence

United States of America, Mexico

States or Providence 


Adult size

Species Description

This rattlesnake ranges from Texas to Arizona and south into Mexico and Baja California. It can be found in grasslands, deserts, rocky areas, and high-pine or boreal forests. There are three subspecies: the northern, the Mexican, and the San Esteban Island black-tailed rattlesnakes.

Fun fact: The northern black-tailed rattlesnake can occupy a diverse range of habitat and elevation. It can be found at up to 12,000 feet elevation! For reference, the tallest mountain in the Rocky Mountain Range is Mt. Elbert at 14,440 feet.

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Jacksonville, FL |  |  1-800-690-5638

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