Photo credit:

Saúl Banda García Granados

Common name

Queretaran dusky rattlesnake

Scientific name

Crotalus aquilus

Conservation Status

Least Concern

Federal and State Protections

Sujeta a Protección Especial (Pr)

Countries of Occurrence


States or Providence 

Guanajuato, Hidalgo, México, Michoacán, and San Luis Potosí


Adult size

50 cm (20 in) - 67.8 cm (26.7 in)

Species Description

This small rattlesnake can be found in the highlands of Central Mexico. The Queretaran dusky rattlesnake has a diverse diet including mammals, lizards, and other snakes--the Mexican pinesnake and species of gartersnakes are each recorded prey items for this rattlesnake.

Fun fact: The specific epithet of this rattlesnake's name, "aquilus," means "eagle" which refers to the high elevation at which this rattlesnake lives: 5,000 to 14,500 ft above sea level!

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