Snakes in Wyoming: identification guide and best places to start

1. Where are the best places to spot snakes in Wyoming?

Most snake sightings happen below 7,000 feet. The Red Desert near Rawlins, the Bighorn Basin around Thermopolis, and the river corridors of the North Platte and Green River are reliable spots. Prairie rattlesnakes favor rocky outcrops and sagebrush flats, while garter snakes stick close to water. I've had my best luck on the gravel roads south of Laramie and along the foothills of the Laramie Range. For a broader overview of Wyoming wildlife hotspots, check out ourWyoming wildlife page.

2. When is the best time of year to see snakes in Wyoming?

Snakes emerge in late April or early May and remain active through September or early October. The peak activity window is from mid-May to mid-June during breeding season, then again in late August and September as snakes feed before hibernation. Warm afternoons between 75°F and 85°F are ideal. Morning or evening hours are best on hot summer days. Avoid cold, overcast, or windy days; snakes stay hidden then.

3. How can I identify common snakes in Wyoming?

Wyoming has 13 snake species, only one of which is venomous: the Prairie Rattlesnake. Key identifiers: Prairie Rattlesnakes have a broad triangular head, heat-sensing pits, and a rattle. They range from light brown to greenish gray with dark blotches. Non-venomous species include the Bullsnake, which mimics rattlesnakes by flattening its head, but its round pupils and lack of pits give it away. Garter snakes are slender with three longitudinal stripes. For more detailed identification, visit oursnake identification hub.

See ourstate animal guidefor the next step.

4. What should I do if I encounter a snake?

Stop, back away slowly, and give the snake plenty of space. Most snakes will flee or freeze. Never try to handle or provoke a snake. Keep dogs on a short leash in snake country. If bitten by a rattlesnake, stay calm, remove jewelry or tight clothing, immobilize the affected limb, and get to a hospital immediately. Do not apply a tourniquet or try to suck out venom. Cell service is spotty in many Wyoming backcountry areas, so carry a personal locator beacon.

5. What are the most common snake species in Wyoming?

The Prairie Rattlesnake is the most widespread venomous snake. Non-venomous species you'll most likely see include the Bullsnake, Western Plains Garter Snake, and Red-sided Garter Snake. The Bullsnake is large and often mistaken for a rattler. Other species like the Smooth Green Snake and Milk Snake are less common but can be found in specific habitats. The Eastern Yellow-bellied Racer is also present in the southeast.

6. Are there venomous snakes in Wyoming?

Yes, but only the Prairie Rattlesnake (Crotalus viridis) is venomous in Wyoming. It's found statewide below 8,000 feet except in the highest mountain areas. It prefers rock outcrops, prairie dog towns, and sagebrush. Bites are rare but do happen. Always watch where you step and place your hands when climbing. The venom is hemotoxic, causing tissue damage and blood clotting issues.

7. What gear or clothing is useful for snake spotting?

When exploring snake habitats, high-top leather boots and thick pants offer good protection. A walking stick can help you probe ahead. For identification, a good field guide or camera with zoom is useful. Once you're home, you can show your appreciation for these reptiles with a design. For more designs, browse oursnake t-shirts.

### Rattlesnake Graphic T-Shirt

A bold rattlesnake graphic on a soft cotton tee, perfect for wearing on your next outing.Check Price and Availability

### Green Viper Snake T-Shirt

A detailed green viper design that stands out on a quality tee.Check Price and Availability

### Retro Cute Snake T-Shirt

A playful retro snake character on a lightweight tee that feels great in warm weather.Check Price and Availability

8. Frequently asked questions about snakes in Wyoming

**Are there timber rattlesnakes in Wyoming?** No, timber rattlesnakes are not found in Wyoming. The Prairie Rattlesnake is the only rattlesnake species here.

**Where is the highest concentration of snakes in Wyoming?** The Red Desert and the Bighorn Basin have the highest densities, especially near rocky buttes and river breaks.

**What time of day are snakes most active?** Snakes are most active in the morning (8-10 AM) and late afternoon (4-7 PM) during warm weather. On very hot days, they may become nocturnal.

**Can you find snakes in Yellowstone National Park?** Yes, but only at lower elevations in the park, such as the Lamar Valley and near the Yellowstone River. The Prairie Rattlesnake is present in the park's northern range.

**Do snakes hibernate in Wyoming?** Yes, from October to April, snakes brumate in communal dens called hibernacula, often in rock crevices or animal burrows.

See ourtour planning ideasfor the next step.