Snakes in Wyoming
Wyoming has two rattlesnake species – the prairie rattlesnake and the midget rattlesnake. The prairie rattlesnake has a wide range in the state, found in all the counties located to the Continental Divide’s east and Carbon County to the Continental Divide’s west. The midget faded rattlesnake inhabiting the cliffy and rocky habitats of Wyoming is a protected species.
Around seven of the non-venomous snakes occupy the southeast portion of Wyoming, like the three garter species, yellow-bellied racer, pale milk snake, and the hognose snakes. The Casper mountains, a popular hiking trail in Wyoming, has a decent population of snakes, often hiding under rock piles during the day, especially when the weather is cool.
| Groups | Venomous | Non-venomous |
|---|---|---|
| Rattlesnakes | Prairie Rattlesnake Midget Faded Rattlesnake | – |
| Kingsnakes | – | Pale Milksnake Western Milksnake |
| Garter Snakes | – | Northern Black Racer Wandering Garter Snake Red-sided Garter Snake Plains Garter Snake Valley Garter Snake Western Terrestrial Garter Snake |
| Hognose Snakes | – | Eastern Hog-nosed Snake Plains Hog-nosed Snake |
| Whip Snakes | – | Striped Whip Snake |
| Coluber | – | Yellow-bellied Racer Northern Black Racer |
| Tantilla | – | Plains Black-headed Snake |
| Charina | – | Rubber Boa |
| Opheodrys | – | Smooth Greensnake |
| Pituophis | – | Bullsnake |
| Storeria | – | Black Hills Redbelly Snake |
