12 Types of Snakes That Live in France! (ID Guide)
Do you want to learn about the types of snakes found in France?
If so, you have come to the right place. In the article below, I have listed the snakes you can expect to see. For each species, you will find out how to identify that snake correctly, along with pictures, interesting facts, and RANGE MAPS!
You’ll see that the snakes that live in France are very different from each other. They range from venomous species to snakes that use constriction to immobilize their prey. In addition, certain snakes are common to find living around people. My guess is that you have seen at least one of the snakes below in your yard. 🙂
12 types of snakes that live in France:
#1. Smooth Snake
- Coronella austriaca
Identifying Characteristics:
- Adults grow between 60 cm – 75 cm (23.5 – 29.5 inches) long.
- On the top of the head is a dark marking which is often in the shape of a crown.
- Usually dark brown or gray in color. Two rows of indistinct dark spots run down its back.
- As the name suggests, the scales of Smooth Snakes are very smooth and flat to the touch.
These small and slender snakes can be hard to find in France because they are secretive.
Even when Smooth Snakes bask in the sun, they intertwine amongst plants to keep camouflaged. They are sometimes found after rain showers when individuals must leave their hiding places to escape the water and bask more openly.
Smooth Snake Range Map
Their primary prey is other reptiles, such as small lizards. But they will eat small mammals and birds occasionally. When threatened, they try to remain motionless and undetected, but Smooth Snakes won’t hesitate to bite when captured.
Interestingly, Smooth Snakes are ovoviviparous. This term means that the eggs are incubated internally, giving birth to live young!
#2. Adder
- Vipera berus
Also known as the Common European Adder / Viper.
Identifying Characteristics:
- Adults average around 55 cm (22 in) long.
- Color varies and can be brown, red, or light grey with a zigzag stripe on the back. But some individuals are entirely black.
- The head is fairly large and distinct and has a distinctive dark V or X on the back.
Despite being venomous, Adders are not considered an incredibly dangerous snake in France.
Luckily, they are not very aggressive and rarely bite unless stepped on, picked up, or provoked. If you are bitten, their venom is quite painful and causes swelling, internal hemorrhaging, and necrosis. While the venom can be lethal, deaths are incredibly rare.
Adder Range Map
Adders are found in many habitats, such as forest clearings, marshlands, heathlands, pastures with hedgerows, and even alpine meadows in the Alps. They mostly eat small mammals, but lizards, birds, and frogs are taken when available.
Because of their large distribution and a broad range of habitats, the population of Adders is currently not threatened. But their numbers are decreasing slightly due to habitat loss for agriculture and collecting them for the pet trade and venom extraction.
#3. Aesculapian Snake
- Zamenis longissimus
Identifying Characteristics:
- A long and slender snake that grows up to 2 meters (6.5 feet) in length.
- It is typically a dark bronze color with very smooth scales, which give it a metallic sheen. But adults can also be olive-yellow, brownish-green, or almost black.
- White freckles appear on the body of many individuals.
The best place to look for Aesculapian Snakes in France is humid forests.
Make sure to look up because they are excellent climbers, having no problem ascending vertical tree trunks without branches. They don’t try to avoid humans, and they are sometimes found in sheds, gardens, and stonewalls.
Aesculapian Snake Range Map
Their main food source comes from small rodents, but they will eat birds and their eggs when given the chance. Being constrictors, they suffocate their prey before consuming it.
Despite being fairly common, Aescuplapian Snakes are rarely seen due to their secretive nature. They blend in well with their surroundings, in addition to spending lots of their time in tree canopies. When they are found, they first try to sneak away to hide instead of standing their ground aggressively like other types of snakes.
#4. Barred Grass Snake
- Natrix helvetica
Identifying Characteristics:
- Dark grey-green upper body with characteristic black barring along the flanks.
- A distinctive yellow and black collar around the neck.
- It can grow over a meter (3.3 feet) in length.
Look for this snake in France living near water!
Barred Grass Snakes are active when searching for food, using their sight and sense of smell to find their prey, which is primarily frogs, toads, and salamanders. These amphibians are eaten live without the aid of constriction.
Barred Grass Snake Range Map
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While these common snakes are not venomous and rarely bite, I would caution against picking one up as they have some interesting defense mechanisms. First, you may smell a nasty garlic odor from a fluid released through their anus. Or you may notice blood secreting out of their mouth and nose. And if that’s not enough, then the individual snake may regurgitate what they have been eating onto you. Hissing and striking without opening their mouth are also common.
Until a few years ago, the Barred Grass Snake (Natrix helvetica) was considered the same species as the Common Grass Snake (Natrix natrix), but a more in-depth study concluded there are enough differences to be considered separate species. Here is how to tell them apart:
- Common Grass Snakes have a bright yellow collar, which Barred Grass Snakes lack.
- Barred Grass Snakes are more grey than their olive green cousin.
#5. Iberian Grass Snake
- Natrix astreptophora
Identifying Characteristics:
- Juveniles have a white and black collar and other body markings.
- Adults lack the collar and are uniformly olive-green, grey, or brown. The iris is usually vivid orange!
- It can grow over a meter (3.3 feet) in length.
Being strong swimmers, look for Iberian Grass Snakes near wet areas, such as ponds, lakes, streams, ditches, and marshes.
They are NOT venomous and rarely bite when captured or threatened. Instead, you can expect them to hiss and spray a smelly substance from their anal glands. If this doesn’t work, they may pretend to be dead, flipping over and letting their tongue hang out of their mouth. Interestingly, Iberian Grass Snakes sometimes act like a cobra, where they raise the front of their body and flatten their heads to resemble a hood!
Iberian Grass Snakes mostly eat amphibians, such as frogs and toads. They are not ambush predators and actively search for their prey using their keen eyesight and sense of smell. In addition, they eat their prey alive without the use of constriction.
Iberian Grass Snakes are ONLY found in the very southern part of France, near the border with Spain. In addition, they are very closely related to Barred Grass Snakes.
#6. Green Whip Snake
- Hierophis viridiflavus
Also called the Western Whip Snake.
Identifying Characteristics:
- A slender snake with a small but well-defined head.
- They are greenish-yellow with heavy, irregular bands of dark green or black, which fade as you move towards the back.
- Maximum size is around 150 cm (59 in).
Due to their adaptability, this snake is common in France!
You can find Green Whip Snakes in a wide variety of habitats, including trees, since they are great climbers. In addition, they will eat almost anything, including reptiles, amphibians, small mammals, and small birds and eggs.
Green Whip Snake Range Map
When threatened, these snakes can become quite aggressive. Be careful as they will try to strike you repeatedly. Luckily, they are not venomous, but they do bite fairly hard. 🙂
#7. Viperine Snake
- Natrix maura
Identifying Characteristics:
- Colors range between gray, brown, or reddish.
- Down its back, look for a black, zig-zag stripe. Along the sides are black circles.
- Adults can grow to 85 cm (33.5 in).
Despite its name, Viperine Snakes are NOT venomous. But they do share many behavioral similarities with Adders (which ARE venomous), along with looking alike, which is how they got their name.
Viperine Snake Range Map
To find this snake in France, you must head to an aquatic habitat as they are water snakes. They are strong swimmers and primarily hunt and eat fish and frogs.
While Viperine Snakes are fairly common, they are sensitive to changes and pollution in their wetland habitats. In addition, they are often killed by people who mistake them for being a venomous viper.
#8. Asp Viper
- Vipera aspis
Other common names include European Asp, European Viper, Black Asp, Central Italian Asp, and Southern Italian Asp.
Identifying Characteristics:
- Fairly small, as adults only average a length of 60-65 cm (23.5 – 25.5 inches).
- The head is broad, triangular, and distinct from the neck. The tip of the snout is slightly upturned.
- Colors range from light grey to brown to various shades of orange. Some individuals are melanistic and completely black!
- They have darker marks on their back, which form an irregular zig-zag pattern.
Be careful if you find this snake in France, as it is VENOMOUS.
Bites from the Asp Viper are both painful and dangerous, with about 4% of untreated bites being fatal. If bitten, go to the hospital immediately, as the venom has both coagulant and anticoagulant effects. Severe hemorrhagic necrosis occurs after a few hours, along with impaired vision due to the degradation of blood vessels and blood around the eyes.
Asp Viper Range Map
According to the IUCN Red List, populations of the Asp Viper are stable, and it’s not currently threatened. These snakes live in a broad range of habitats and have a wide distribution. In general, look for them in areas with plenty of sun, vegetation for cover, and dry soil.
While we will never know for sure, many people think that the Asp Viper was the type of snake that bit and killed the Egyptian Queen Cleopatra!
#9. Western Montpellier Snake
- Malpolon monspessulanus
Identifying Characteristics:
- Quite large and can grow to be up to 2 meters long (6.5 feet) and weigh 1.5 kg (3.3 lbs)!
- Large prominent eyes with a distinct “eyebrow,” which is a ridge above their eye.
- The body is a uniform yellowish, grey, or olive, often followed by a bluish or dark grey “saddle” on the back.
Despite being venomous, these snakes are not considered a threat to humans in France.
First, the venom has low toxicity and is not very dangerous. Second, when they feel threatened, Western Montpellier Snakes typically slither away quickly. And if they can’t get away, they first try to scare you away by hissing repeatedly, then raising the front of their body and expanding their neck, just like a cobra!
Western Montpellier Snake Range Map
Lastly, since the fangs are positioned toward the back of the mouth, it’s unlikely any venom would be released during a bite. In fact, only a few cases of venom being injected into a person have ever been reported.
Western Montpellier Snakes adapt to the presence of humans quite well and are common, despite their large size. Look for them in a wide range of habitats. Their main prey includes lizards, so they are often found in dry areas where lizards like to inhabit.
#10. Ladder Snake
- Zamenis scalaris
Identifying Characteristics:
- A medium-sized snake that reaches up to 160 cm long (63 in).
- Color ranges from yellowish to dark brown, with two darker stripes running down the length of the body from neck to tail.
- Pointed snout. Dark eyes.
Naturally, Ladder Snakes are fairly abundant in France in areas with scrubby, brushy cover with lots of sunshine. They have adapted well to human environments and are often seen living in orchards, vineyards, and overgrown stone walls. Look for them hiding inside rodent burrows, hollow trees, or piles of stones.
Ladder Snake Range Map
Being a “rat snake,” most of their diet comprises small mammals, such as mice, rabbits, and shrews. Although they also prey on birds and are known to climb to search for nests.
When threatened, Ladder Snakes are aggressive and become very defensive. You can expect them to hiss and lunge forward with their mouths open. If you decide to continue to pick them up, expect them to bite repeatedly, in addition to releasing a smelly odor on you.
#11. Southern Smooth Snake
- Coronella girondica
Identifying Characteristics:
- A small, round-bodied snake that grows between 50 cm to 80 cm (19 – 32 in) long.
- They are brown or grayish, with blackish bars or spots running down their back.
- The rear of the head is a dark U-shaped mark or a pair of dark elongate spots.
- Very similar to the Smooth Snake (Coronella austriaca).
Look for this snake in France living in dry, rocky open spaces. Rocky hillsides, stone walls, quarries, and the edges of open woodlands and hedgerows offer lots of hiding places for Southern Smooth Snakes.
Southern Smooth Snake Range Map
This small snake is discrete and hard to find. In addition, they are mainly active at night. And if you do come across a Southern Smooth Snake, they are harmless and rarely bite. The worst thing they will probably do is release a smelly substance onto your hand.
They primarily eat small lizards and hunt for them by actively searching in their shelters. In contrast to the Smooth Snake, they lay eggs instead of giving birth to live young.
#12. Meadow Viper
- Vipera ursinii
Identifying Characteristics:
- Adults average 40–50 cm (15.75–19.69 inches) in total length.
- They are gray, tan, or yellowish with a dark wavy dorsal stripe, which is edged with black.
- The snout is NOT upturned, like the Asp Viper.
These snakes are considered a very RARE species in France!
In fact, they are in danger of going extinct, with only a few scattered populations remaining. Their main threats include habitat destruction due to agriculture and climate change in mountain areas, which is where many of them are found.
Meadow Viper Range Map
Meadow Vipers are among the smallest venomous vipers on the continent. But despite their size, they are incredibly feisty when they feel threatened. So you can expect an upset snake to hiss and strike in defense.
Luckily, their venom is probably the least dangerous of the European vipers, although the bite can still be painful and cause internal hemorrhaging.
Do you need more help identifying a snake you saw in France?
If so, check out this field guide, which is full of great information!
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Which of these snakes have you seen before in France?
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