NNTRC Snakes

Scientific Name

Crotalus oreganus lutosus

Common Name 

Great Basin Rattlesnake

Physical Characteristics

Length, 24-48 in. (60-120 cm). The ground color varies greatly and can be buff, yellowish, tan or grey. There are a series of widely separated large dark brown or black blotches along the back.

Geographic Range (USA)

Southeastern third of Oregon and southern Idaho, extreme northeast California, across Nevada, the western half of Utah and extreme northwest Arizona.

Map button button

Arid desert areas, rocky scrub, forests, and prairie.


Rodents, lizards, and small birds.


Hemorrhagic toxins, resulting in tissue damage and edema.


Once considered a subspecies of the Crotalus viridis complex. Recent molecular analysis suggests it is a separate species and Douglas et al. (2003) has elevated it to full species status. They are usually a passive and inoffensive snake however they will stand their ground when cornered.

This page was last updated on: February 12, 2016