Grand Canyon Rattlesnake
Crotalus
oreganus abyssus
This subspecies reaches a maximum size of 24" to 40". Blotches usually fade in adults. Some adults may lack body markings entirely. Coloration is usually light tan, yellowish tan, or light gray brown; less commonly pink or reddish brown. Darker individuals show muted facial markings including dark bars with light colored edges that extend back from the eye to the corner of the mouth. Young are blotched and have prominent head and facial markings. This snakes range is entirely within the Grand Canyon and related upriver canyons to Glen Canyon.