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Common name

Oaxacan Pygmy Rattlesnake

Scientific name

Crotalus brunneus

Conservation Status


Federal and State Protections

Federally Protected (Mexico; Pr = Special Protection)

Countries of Occurrence


States or Providence 



Adult size

18in (45.7cm) to 30in (76.2cm)

Species Description

The Oaxacan Pygmy Rattlesnake is a small species of rattlesnake found in the mountains of Oaxaca. This species can be distinguished from the two other species of Mexican Pygmies by its 5-8 tail bands and undivided parietal scales (behind the eyes). It inhabits mixed oak-pine forests and semi-arid scublands. As a generalist predator, it eats a variety of prey including rodents, lizards and sometimes insects.

This species is threatened by habitat loss, particularly the use of fire to clear woodlands for agriculture. Human persecution also plays a role in the decline of this species.

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Jacksonville, FL |  |  904-955-0278

© 2019 The Rattlesnake Conservancy, 501(c)(3) corporation

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