Discover 50+ Snakes Found In Louisiana (7 are Venomous!)

Center frame on white isolate: A timber rattlesnake posed in a loose coil, it's head facing frame left., its forked tongue extended. The snake is a gold brown with distinct black markings.
Eric Isselee/

Written by Tracy Graham

Updated: February 14, 2024

Share on:


Listen to Article

State Flag of Louisiana, a state that has many different types of snakes.

It’s probably no surprise that Louisiana has many different types of snakes. Louisiana has an extensive network of wetland swamps where snakes thrive. The warm weather and abundance of water and woods create the perfect habitat for many different types of snakes. You should always be careful when you are out in nature in Louisiana because there is a high probability that you will run across some snakes while you are out fishing, hunting, or boating. Luckily only seven of the 50-plus different types of snakes in Louisiana are venomous. Always be careful when you’re around any snake though, even if it’s not a venomous snake. Even non-venomous snakes can give you a nasty bite.

The Most Common Snakes In Louisiana

Some of the most common non-venomous snakes in Louisiana are:

Brown Snakes (Dekay’s Brown Snake)

Snakes in Maine - DeKay's Brown Snake (Northern Brown Snake)

Brown snakes

Brown snakes are very small, they are typically under 16 inches long. But you can find them almost everywhere. In Louisiana, they live in both rural and urban areas and they are often found in potted plants or under leaf piles. If there are piles of vegetation in an area there are probably brown snakes under or near it. They also live in nursery plants, so if you live in an urban area and you buy potted plants look carefully because there will probably be a brown snake in there.

Common Garter Snake

A common garter snake slithering in grass

All garter snakes have keeled scales, which means they have a ridge down the center.

As the name suggests these snakes are commonly found throughout the state. They have diamond-shaped heads and patterns of spots across their bodies which they display when they feel threatened. A Common Garter Snake will lower and flatten its head and spread out its body if it is feeling cornered or threatened so if you see a Common Garter Snake start to flatten out slowly back away and leave the area.

Eastern Hog-Nosed Snake

Snakes That Look Like Copperheads-Eastern Hognose Snake

Eastern Hognose Snake with a flattened neck on sandy soil with grass.

The Eastern hog-nosed snake is another non-venomous snake that lives throughout Louisiana, although it prefers drier areas and isn’t usually found in wetlands. This snake looks pretty scary when you come across it but it’s non-venomous and it’s more scared of you than you are of it. Eastern hog-nosed snakes will look like they are going to bite if they feel threatened but it’s just a bluff. If you don’t back away immediately it will fall down and play dead until you leave the area.

Venomous (Poisonous) Snakes In Louisiana

There are only seven types of venomous snakes in Louisiana. That means you have a much higher chance of coming across a non-venomous snake than you do of running into a venomous snake. However, if you do spend a lot of time in the wet low-lying areas or in the forests you should always watch out for these venomous snakes in Louisiana:

Eastern Diamond Rattlesnake

eastern diamondback rattlesnake curled up in grass

The Eastern diamondback rattlesnake was a symbol on one of the first flags of the United States.

The eastern diamondback rattlesnake is one snake that you definitely cannot miss despite the muted coloring it has. The eastern diamond back is the largest and heaviest snake in Louisiana. This snake can grow to be a whopping eight feet long, although most around six feet long. The eastern diamondback is mostly nocturnal and is most active just after dusk or before sunrise.

They tend to stick to drier areas like scrublands or woodlands although they make lurk on the edges of swamps and rivers. eastern diamondbacks have a distinctive black pattern on their faces and the pattern of diamonds down their backs that they get their name from. They can strike at prey that is several feet away from them very swiftly, so you should always stay far back from one of these snakes. If you hear the telltale rattle start and you see the snake start to rise up very slowly back up until you are out of striking distance.

Timber Rattlesnake

Timber Rattlesnake coiled on a rock

Timber Rattlesnakes

are the most venomous snake in the US

Timber rattlesnakes inhabit forested areas, farms and agricultural areas, and lowland thickets across the entire state of Louisiana. They can get to be about five feet long and they have colorings that range from yellow-gray to black. Timber rattlesnakes are near the top of the list of the deadliest predators in Louisiana. They have extremely long and extremely sharp fangs. They also have the most concentrated venom of any of the poisonous snakes in the state. A Timber rattlesnake may not give you a lot of warning before striking. It’s an ambush hunter that prefers to strike unexpectedly. So when you hear a rattle assume you don’t have a lot of time and get out of the immediate vicinity immediately.

Pygmy Rattlesnake

Pygmy rattlesnakes can inhabit urban areas, which makes them additionally dangerous.

They are often found in yards, in flowerpots or in landscaping around homes, and in brush piles. These snakes may look harmless because of their very small size but they are venomous. They almost never are larger than 18 inches long, and most are just about 12 inches long.

Even though the pygmy is technically a rattlesnake they don’t actually rattle in most cases. Additionally, their rattle is small and not as developed as their larger cousins and you may not even hear it before being bitten. Fortunately, they aren’t prone to biting, and giving it space is all you need to do. Always look for snakes before you start doing lawn or gardening work around your home in Louisiana. Because these snakes are very small a bite probably won’t kill you but the venom can cause some tissue damage and a lot of pain. Get medical help immediately if you are bitten by a pygmy rattlesnake.

Eastern Copperhead

Eastern Copperhead

Eastern copperheads are intimidating snakes that should be avoided.

Eastern Copperheads inhabit mostly rocky areas of the state and the parts of the state that have the highest elevation. But if you spend a lot of time near the marshy areas of the state you might see them there as well. These venomous snakes are most active during fall and spring. During the hot months of July and August, they often are nocturnal so you can usually avoid them unless you are out at night camping, hiking, or fishing. They often don’t get bigger than about three feet. Eastern Copperheads have coloring that tends to blend in very well with their surroundings so you should be very careful of them. They strike without warning, and while a bit from an Eastern Copperhead probably won’t kill you it can be very painful.

Coral Snakes (Texas and Eastern)

Coral snakes

are venomous and have snakes that mimic their appearance.

Coral snakes are recognized by their black heads and colorful banding. These colorful snakes don’t look that dangerous but they have a very powerful venom that can cause tissue damage and respiratory distress in just minutes. Thankfully, these colorful but dangerous snakes prefer to live mostly underground so it’s very rare for them to come into contact with humans.

The western half of Louisiana is home to the Texas coral snake while the eastern side is home to the Eastern coral snake. The middle of Louisiana is likely free from coral snakes, but if you see a snake matching their coloring, be extremely careful!

Northern Cottonmouth (Water Moccasin)

Side view of a <a href=

Side view of a Cottonmouth snake, ready to strike. The snake has a large spade-shaped head.

Northern cottonmouths are the only venomous semiaquatic snake in Louisiana. But since so much of Louisiana is made of water or closer to water it is tough to find a place where they’re not. Northern Cottonmouth Water Moccasin snakes are known for showing their wide open mouth when they feel threatened. They will throw back their heads exposing their large white mouths before they strike. So if you see a flash of white get your arms and legs out of the area as fast as you can.

The Complete List Of Snakes In Louisiana

There are many more types of snakes in Louisiana that aren’t covered here. Because Louisiana has such a unique climate and landscape it’s a paradise for snakes. If you love snakes be on the lookout for these types of snakes in Louisiana:

Other Reptiles Found In Louisiana

The glass lizards are a species of legless lizards that contain 15 different species, one of which is the slender glass lizard. Often confused with snakes because of their long bodies and lack of feet, these lizards, unlike snakes, have movable eyelids and external ear openings as well as tails that are able to grow back after breaking off. This penchant for breaking off their tails in several places, which appear to look as if it is shattered, earned them the name glass lizards. This strictly carnivorous lizard grows up to 29.5 inches and weighs between 11 to 21 ounces.

The American alligator is native to the Southeast United States and is the largest reptile in Louisiana, with adults reaching weights of between 400 to 800 pounds and lengths of 8 to 15 feet. Known to run fast on land in sprints, upwards up 30 mph, they do tire quickly and won’t last at this pace for long. In the water, where they have more resilience, they can reach a top speed of 20 mph. Alligators also have powerful tails and are able to utilize them as an aid in hunting prey. When they spot a potential target, they are able to leap 5 feet out of the water to grab them and have also been known to climb stairs, ladders, fences, and trees. While they don’t generally target humans, preferring animals, it is best to stay out of range of this reptile.

Discover the "Monster" Snake 5X Bigger than an Anaconda

Every day A-Z Animals sends out some of the most incredible facts in the world from our free newsletter. Want to discover the 10 most beautiful snakes in the world, a "snake island" where you're never more than 3 feet from danger, or a "monster" snake 5X larger than an anaconda? Then sign up right now and you'll start receiving our daily newsletter absolutely free.

Share this post on:

Thank you for reading! Have some feedback for us? Contact the AZ Animals editorial team.