Snakes in Idaho
Idaho has around 12 snake species, two of which are considered venomous. The southern part of the state has most snakes, including the venomous ones. For instance, the striped whipsnake dwells in the southwestern and south-central parts. The long-nosed snake inhabits the desert regions in Idaho’s southwestern belt.
The gopher snake is Idaho’s largest snake, measuring 170 cm.
| Group | Venomous | Non-venomous |
|---|---|---|
| Rattlesnakes | Western Diamondback Rattlesnake Prairie Rattlesnake | – |
| Garter Snakes | – | Common Garter Snake Western Terrestrial Garter Snake |
| Gopher Snakes | – | Gopher Snake Pacific Gopher Snake |
| Whip Snakes | – | Striped Whipsnake |
| Ground Snakes | – | Western Ground Snake |
| Charina | – | Rubber Boa |
| Hypsiglena | – | Desert Nightsnake |
| Rhinocheilus | – | Long-nosed Snake |
| Diadophis | – | Ring-necked Snake |
| Coluber | — | North American Racer |
Snakes by Colors and Patterns
Black Snakes: North American Racer, Western Ground Snake
Snakes by Regions
Snakes in Northern Idaho: Common Garter Snake, Western Terrestrial Garter Snake
Snakes in Southern Idaho: Long-nosed Snake, Northern Pacific Rattlesnake, Prairie Rattlesnake
Quick Information
Largest Snake: Gopher Snake
Most Venomous Snakes: Prairie Rattlesnake, Western Diamondback Rattlesnake
