Photo credit:

Elí García-Padilla

Common name

Oaxacan Small-Headed Rattlesnake

Scientific name

Crotalus intermedius gloydi

Conservation Status

Least Concern

Federal and State Protections


Countries of Occurrence


States or Providence 

Oaxaca, Puebla


Adult size

45.7cm (18in) - 60.9cm (24in)

Species Description

The Oaxacan Small-Headed Rattlesnake, also known as Gloyd's Small-Headed Rattlesnake, is a small species of snake found in the highlands of southern Mexico. Oaxacan Small-Headed Rattlesnakes are often dark grey, sometimes purple or brownish, with jagged blotches of a darker color along the sides. A distinguishing feature of this snake is a black streak above the eye and a white streak below.
It occupies elevations from 1,000 - 3,000m above sea level, and can be found in a variety of habitats from tropical cloud forest, to dry pine-oak forests and even semi-arid deserts. This species is active during the day. It is both an ambush predator and a generalist, targeting lizards, toads and small mammals.

This subspecies is named after American Herpetologist Howard K. Gloyd.

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