Are There Cottonmouths in Alabama?
Yes, cottonmouths live throughout much of Alabama, particularly in the southern half and coastal regions. While they are present in suitable habitats, actual bites are uncommon, and most people never encounter one. Understanding their behavior and habitat helps you coexist safely with this venomous snake.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 22, 2026.
Northern Cottonmouth · kirk gardner CC BY
Northern Cottonmouth · Mila Turov CC BY
Northern Cottonmouth · Joshua Liverman CC BY
- 1
- species recorded
- 1,457
- GBIF records
- April, May, July
- peak months
Yes, cottonmouths are in Alabama. Next you'll want:
Real sighting data, source iNaturalist
1,809 verified observations on iNaturalist of cottonmouth have been recorded in Alabama, most often in April, May, July.
When cottonmouth are recorded in Alabama
Yes, cottonmouths live throughout much of Alabama, particularly in the southern half and coastal regions. While they are present in suitable habitats, actual bites are uncommon, and most people never encounter one. Understanding their behavior and habitat helps you coexist safely with this venomous snake.
Are they in Alabama?
Cottonmouths are well established throughout Alabama, especially in the southern coastal plain, swamps around Mobile Bay, the Gulf Shore region, and along major river systems like the Alabama, Tombigbee, and Black Warrior rivers. They inhabit wetland areas throughout the state's southern half and are particularly common in the wiregrass swamps and pocosins of the Lower Coastal Plain. You can find accurate information aboutCottonmouth in Alabamato learn more about their local habitat. They are less common in the northern regions and mountains of central Alabama where it gets cooler, but they do occur there in suitable wetland habitat near flowing water. The species is indeed present and established in your state, but they are not aggressive and prefer to avoid humans when possible.
How dangerous is it?
A cottonmouth bite is medically significant and should always be evaluated by a healthcare provider. The venom can cause pain, swelling, and tissue damage at the bite site, and in rare cases, systemic effects like coagulopathy or shock. However, deaths in Alabama are extremely rare, and modern medical care is highly effective at treating cottonmouth bites. Most bites occur when someone tries to handle or kill the snake, so the key to safety is simply leaving them alone. If bitten, the most important action is to get professional medical care promptly. The actual risk to the average person enjoying Alabama's outdoors is very low because cottonmouths are not aggressive and will try to leave rather than strike.
How to recognize one
Cottonmouths are medium-sized venomous snakes, typically 24 to 36 inches long, with a thick, heavy body. Young snakes are brightly patterned with crossbands, while adults tend to be darker, ranging from dark brown to almost black, sometimes with faint banding visible. They have a distinctly triangular head and a heavy body. The name comes from their threat display: when cornered, they gape their mouth wide open, showing the white interior. They may also curl into a tight S-shape with their neck in preparation to strike. You can learn more about recognizing local wildlife by visitingAlabama wildliferesources. They hide in swamps, marshes, along pond edges, in hollow logs, under debris, and in cypress knees. Look for them in or near water during warm months, especially at dawn and dusk.
What to do if you are bitten or stung
If bitten by a cottonmouth, stay calm and seek medical care immediately. Remove any rings or tight clothing from the bitten area and keep the limb still and below heart level if possible. Do not attempt to capture or kill the snake, as this risks another bite. Do not apply ice, tourniquets, or try field treatments like cutting or suction. Do not try to identify the snake type yourself before seeking care. 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. Getting professional medical attention is the only effective treatment. Medical professionals can provide antivenom if needed and manage pain and complications effectively.
How to prevent encounters
Keep your yard clear of debris, woodpiles, and dense vegetation, especially near water. Wear closed-toe shoes and long pants when hiking or working outdoors in wet habitats. Shake out shoes and clothing before putting them on. Be cautious when reaching into tall grass, logs, or brush. When camping or hiking near wetlands, water, or swamps, stay on established trails and watch where you step. If you have a pond or wetland on your property, keep grass cut short around the edges and remove shelter like stacked wood or rock piles. Never swim in murky water where you cannot see the bottom. Seal gaps around doors, windows, and foundation cracks in your home. When fishing or boating in Alabama's rivers and marshes, keep an eye out but remember the snake wants to avoid you just as much as you want to avoid it.
Where in Alabama and when
Cottonmouths in Alabama are active during warm months, typically from April through October, with peak activity in late spring and early summer. They are found in every coastal county and throughout the Gulf Coastal Plain region. Specific hotspots include the Sipsey Swamp in northwestern Alabama, the swamps and bayous around Mobile Bay, the pocosins of the Lower Coastal Plain, and along the black water rivers like the Blackwater and Yellow rivers. As you move north into the Piedmont and the Alabama Mountains, they become less common but can still be found near larger rivers and wetland areas. In summer heat, they are most active at night or early morning. Winter is when they seek shelter in dens and deep refuge areas. Learn more aboutwildlife in Alabamaand their seasonal patterns. They depend on water and humidity, so they are restricted to swamps, marshes, pocosins, river bottoms, and coastal areas.
Harmless lookalikes
The snake you see in or near water in Alabama is far more likely to be a harmless water snake than a cottonmouth. Northern water snakes are very common throughout the state and are frequently mistaken for cottonmouths because they also live near water and have somewhat similar coloring. Brown water snakes and green water snakes are also abundant harmless species. These water snakes are smaller-headed, have more elongated bodies, and are not venomous. Garter snakes and ribbon snakes are thin, harmless, and common around wetlands. The key difference is that cottonmouths have a thick, heavy body, a distinctly wide head, and that characteristic white mouth that opens in a threat display. When you see thesemore on Cottonmouth in Alabamadetails, you will feel more confident identifying what you encounter. Most waterside snakes in Alabama are harmless, which is excellent news for your safety.
Frequently Asked Questions
**Are cottonmouths deadly?** Cottonmouth bites are serious and require immediate medical care, but deaths are rare in the United States with modern treatment available. **How common are cottonmouth bites in Alabama?** Bites are uncommon because the snakes prefer to avoid humans. Most bites happen when someone tries to handle or kill a snake. **What attracts cottonmouths to a house?** Frogs, other snakes, insects, and standing water around your property. Remove these attractants by eliminating shelter and standing water. **What should I do if I see one?** Step back slowly and give the snake space to leave. Do not corner it or try to kill it. For more information, visit yourAlabama wildlife guideto learn about safety in nature. Most encounters can be avoided with basic caution and awareness of your surroundings.
Plan your trip
Best time to see cottonmouth in Alabama: April, May, July
See the month-by-month sighting calendar.
Plan your cottonmouth sighting in Alabama
1,457 verified cottonmouth records have been logged in Alabama, most recently in 2026. See the GBIF records.
Where to look in Alabama
- Horseshoe Bend National Military Park · Wildlife Watching, Birdwatching · Find hotels
- Little River Canyon National Preserve · Wildlife Watching, Birdwatching · Find hotels
- Natchez Trace Parkway · Wildlife Watching, Birdwatching · Find hotels
- Russell Cave National Monument · Wildlife Watching, Birdwatching · Find hotels
- Birmingham Civil Rights National Monument · Find hotels
- Freedom Riders National Monument · Find hotels
Frequently asked questions
Are they in Alabama?+
Cottonmouths are well established throughout Alabama, especially in the southern coastal plain, swamps around Mobile Bay, the Gulf Shore region, and along major river systems like the Alabama, Tombigbee, and Black Warrior rivers. They inhabit wetland areas throughout the state's southern half and are particularly common in the wiregrass swamps and pocosins of the Lower Coastal Plain. You can find accurate information aboutCottonmouth in Alabamato learn more about their local habitat. They are less common in the northern regions and mountains of central Alabama where it gets cooler, but they do occur there in suitable wetland habitat near flowing water. The species is indeed present and established in your state, but they are not aggressive and prefer to avoid humans when possible.
How dangerous is it?+
A cottonmouth bite is medically significant and should always be evaluated by a healthcare provider. The venom can cause pain, swelling, and tissue damage at the bite site, and in rare cases, systemic effects like coagulopathy or shock. However, deaths in Alabama are extremely rare, and modern medical care is highly effective at treating cottonmouth bites. Most bites occur when someone tries to handle or kill the snake, so the key to safety is simply leaving them alone. If bitten, the most important action is to get professional medical care promptly. The actual risk to the average person enjoying Alabama's outdoors is very low because cottonmouths are not aggressive and will try to leave rather than strike.
More wildlife in Alabama