Terrestrial gartersnakes are the most common reptile in Yellowstone.
Bullsnakes are often mistaken for rattlesnakes because of their appearance and behavior.
Prairie rattlesnakes are the only dangerously venomous snakes in Yellowstone.
The sagebrush lizard is the only lizard in Yellowstone.
Common gartersnakes are only found in southern parts of the park.
There are six reptile species in Yellowstone.
Last updated: July 21, 2020