Are There Rattlesnakes in Tennessee?
Yes, multiple rattlesnake species live in Tennessee, including the timber rattlesnake in forested areas across the state, the western diamondback in the western dry regions, the eastern diamondback in the low country of west Tennessee, and the dusky pigmy in sandy habitats. They are venomous but generally shy and reclusive.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 21, 2026.
Eastern Diamondback Rattlesnake · Scott Allen Davis CC BY
Panamint Rattlesnake · Matt Berger CC BY
Red Diamond Rattlesnake · Amy Huie CC BY
- 1
- species recorded
- July, June, May
- peak months
Real sighting data, source iNaturalist
954 verified observations on iNaturalist of rattlesnake have been recorded in Tennessee, most often in July, June, May.
When rattlesnake are recorded in Tennessee
Yes, multiple rattlesnake species live in Tennessee, including the timber rattlesnake in forested areas across the state, the western diamondback in the western dry regions, the eastern diamondback in the low country of west Tennessee, and the dusky pigmy in sandy habitats. They are venomous but generally shy and reclusive.
Are Rattlesnakes in Tennessee?
Yes, rattlesnakes are established throughout Tennessee with four distinct species occurring in the state. The timber rattlesnake is found in forested areas, mountains, and rocky regions throughout Tennessee. The western diamondback rattlesnake is found in the western portions of the state, particularly in the drier plateau and prairie regions. The eastern diamondback rattlesnake is found in the low country of west Tennessee in sandy habitats. The dusky pigmy rattlesnake is found in scattered locations across the state in sandy and scrubby areas. The timber rattlesnake is the most frequently encountered species. All four species are venomous and require respect and distance. However, they are generally reclusive and prefer to flee when they detect humans nearby. For detailed information onRattlesnake in Tennessee, consult this guide to understand the specific species in your area.
How Dangerous Is a Rattlesnake?
Rattlesnake bites in Tennessee are medical emergencies requiring immediate professional care, but they are rarely life-threatening. Fewer than 1 percent of bites in the United States result in death. The venom causes severe pain, rapid swelling, and tissue damage at the bite site. Systemic effects such as difficulty breathing, paralysis, or cardiovascular changes indicate a serious bite requiring emergency care. The venom is designed by evolution to immobilize small prey, not to harm humans. Dry bites, where little venom is delivered, occur in a percentage of defensive encounters as snakes conserve venom for hunting. Most people bitten in Tennessee survive with appropriate medical care and antivenom. However, permanent tissue damage and functional impairment can result even from successfully treated bites. Children and elderly people have higher risk from bites than healthy adults. Prompt care and timely administration of antivenom dramatically improve outcomes.
How to Recognize a Rattlesnake
Tennessee's rattlesnakes are distinctive and can be identified by their key features. Timber rattlesnakes are large, ranging from 3 to 5 feet long, with dark chevron-shaped or hourglass bands on a tan, brown, or gray background. Western diamondbacks are large and strong, with diamond-shaped blotches and distinctive black and white banded tails. Eastern diamondbacks are similar to western diamondbacks but typically have less contrast. Dusky pigmy rattlesnakes are small, rarely exceeding 18 inches, with a subtle pattern and a pink tail tip. All rattlesnakes have the diagnostic segmented rattle at the tail tip that buzzes when vibrated. They have triangular heads distinctly wider than the neck. Vertical pupils give them a distinctive eye shape. Not all rattles function perfectly; some may be broken or worn. Listen for the characteristic buzzing sound, which provides early warning. You might encounter them inwildlifehabitats throughout the state.
What to Do If Bitten
If bitten by a rattlesnake in Tennessee, stay calm and seek medical care immediately. Remove any jewelry or tight clothing from the bitten limb to prevent restriction from swelling. Keep the affected area still and immobilized, and if possible, keep it below heart level. Do not attempt field treatment such as cutting, sucking, applying tourniquets, or ice. Do not apply heat. Do not rub the bite. Walk calmly to your vehicle or arrange for someone to drive you to the nearest hospital emergency room. Call 911 if you are far from help. This is general information, not medical advice; if you are bitten, call Poison Control at 1-800-222-1222, or 911 if symptoms are severe. Antivenom is the primary treatment and is most effective when administered within the first few hours of a bite. Most hospitals in Tennessee that serve areas with outdoor recreation have antivenom available.
How to Prevent Encounters
Prevention is the most effective strategy for avoiding rattlesnake bites in Tennessee. When hiking, camping, or spending time in areas where rattlesnakes occur, wear closed-toe boots that cover the ankle and consider snake gaiters for additional protection. Stay on marked trails and watch where you place your hands and feet. Do not reach into areas you cannot see, such as between rocks, under logs, or into brush piles. Make noise while hiking so snakes hear you coming and can move away. Avoid walking at night when snakes are active and less visible. Keep your yard clear of brush, rock piles, and dead wood where snakes might hide. Seal cracks and gaps around your home's foundation, doors, and windows. Remove potential food sources such as rodents by securing garbage and food storage. Clear firewood piles away from your home. Snakes in Tennessee naturally want to avoid humans and will escape if given the opportunity.
Where in Tennessee and When
Rattlesnakes in Tennessee are found throughout the state but in different specific habitats depending on the species. Timber rattlesnakes are most common in forested areas, particularly in the Tennessee Valley, the Cumberland Plateau, and the Smoky Mountain region. Western diamondbacks are found in the drier western portions of Tennessee, particularly on the Highland Rim and the Cumberland Plateau. Eastern diamondbacks are restricted to sandy habitats in west Tennessee. Dusky pigmy rattlesnakes are found in scattered locations across the state in sandy areas. Rattlesnakes are active from April through October in Tennessee, with peak activity from May through September. They are most active during late morning and early evening when temperatures are warm.Wildlife in Tennesseeincludes many species; rattlesnakes are just one part of the state's reptile diversity.
Harmless Lookalikes
Many snakes in Tennessee are mistaken for rattlesnakes but are completely harmless. The bullsnake or gopher snake has a blotched pattern similar to timber rattlesnakes and will vibrate its tail defensively. However, it lacks the segmented rattle and has a smaller, pointed head. Water snakes in Tennessee are frequently confused with water moccasins or cottonmouths but are harmless and lack the viper head shape. The hognose snake has a blotched pattern and can flatten its head defensively but is harmless. Rat snakes and black snakes are common throughout Tennessee and have solid or striped coloring. Grass snakes and racer snakes are common and have simple, uniform coloring. Kingsnakes are common and have bands or speckled patterns. If you see a snake with obvious diamond or chevron-shaped blotches and a segmented rattle at the tail, it is a rattlesnake. Most snakes people encounter are beneficial.More on Rattlesnake in Tennesseewill help you identify them correctly.
Frequently Asked Questions
Are rattlesnakes deadly? Rattlesnakes are venomous and bites are serious medical emergencies, but deaths are very rare, especially with prompt treatment. How common are rattlesnake bites in Tennessee? Bites are uncommon in Tennessee; most people live their entire lives without a bite incident. What attracts rattlesnakes to an area? Rattlesnakes are attracted to rodents, their primary prey, and to rocky or brushy habitats where they can hide and hunt. What should I do if I see one? Move away slowly and give the snake plenty of space to escape. Do not corner it or try to capture it.Tennessee wildlife guidehas additional safety information for all wildlife in the state.
Plan your trip
Best time to see rattlesnake in Tennessee: July, June, May
See the month-by-month sighting calendar.
Frequently asked questions
Are Rattlesnakes in Tennessee?+
Yes, rattlesnakes are established throughout Tennessee with four distinct species occurring in the state. The timber rattlesnake is found in forested areas, mountains, and rocky regions throughout Tennessee. The western diamondback rattlesnake is found in the western portions of the state, particularly in the drier plateau and prairie regions. The eastern diamondback rattlesnake is found in the low country of west Tennessee in sandy habitats. The dusky pigmy rattlesnake is found in scattered locations across the state in sandy and scrubby areas. The timber rattlesnake is the most frequently encountered species. All four species are venomous and require respect and distance. However, they are generally reclusive and prefer to flee when they detect humans nearby. For detailed information onRattlesnake in Tennessee, consult this guide to understand the specific species in your area.
How Dangerous Is a Rattlesnake?+
Rattlesnake bites in Tennessee are medical emergencies requiring immediate professional care, but they are rarely life-threatening. Fewer than 1 percent of bites in the United States result in death. The venom causes severe pain, rapid swelling, and tissue damage at the bite site. Systemic effects such as difficulty breathing, paralysis, or cardiovascular changes indicate a serious bite requiring emergency care. The venom is designed by evolution to immobilize small prey, not to harm humans. Dry bites, where little venom is delivered, occur in a percentage of defensive encounters as snakes conserve venom for hunting. Most people bitten in Tennessee survive with appropriate medical care and antivenom. However, permanent tissue damage and functional impairment can result even from successfully treated bites. Children and elderly people have higher risk from bites than healthy adults. Prompt care and timely administration of antivenom dramatically improve outcomes.
More places to see rattlesnake
More wildlife in Tennessee
Common questions about rattlesnakes