There are A LOT of snakes in Manitoba!

And what’s interesting is that they are all incredibly unique and have adapted to fill many habitats and niches.

You’ll see that the snakes that live in Manitoba are very different from each other.

For example, some species prefer living in or near water, while others spend most of their time climbing trees. Or the fact that certain snakes are rarely seen because they spend most of their time underground, but others are comfortable living EXTREMELY close to humans.

5 types of snakes in Manitoba!

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#1. Red-sided Garter Snake

• Thamnophis proximus parietalis

Identifying Characteristics:

• Normally dark green to black, but color varies.
• Three yellow stripes; one down the back and one down each side.
• As the name suggests, red or orange bars run along their sides between the yellow stripes.
• Subspecies of the Common Garter Snake.

Like other garter snakes, they are habitat generalists. Look for them in Manitoba everywhere, including forests, shrublands, wetlands, fields, and rocky areas. Their favorite foods include frogs, earthworms, and leeches! YUM! 🙂

In some areas, after emerging from hibernation, there are not enough females for all the males. In these cases, “mating frenzies” occur, and dozens and dozens of these snakes can be found together.

To survive colder months, Red-sided Garter Snakes have to hibernate BELOW the frost line. Depending on the area they are located in, it can be hard to find suitable locations. So the few adequate hibernation dens can shelter hundreds, even thousands, of snakes! To see an example, watch the video below:

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#2. Plains Garter Snake

• Thamnophis radix

Identifying Characteristics:

• Adults average 90 centimeters in length.
• Coloration is gray-green with a distinctive orange stripe down the back and a greenish-yellow stripe down each side.
• Distinct light yellow spots on the very top of the head!

Plains Garter Snakes are almost always found in Manitoba in prairies and grasslands near freshwater sources. They have a fairly large population and adapt well to human-modified landscapes. You may spot them near abandoned buildings, trash heaps, or vacant lots.

This species is considered one of the most cold-tolerant of all snakes! In fact, they will even come out of hibernation on warmer winter days.

Plains Garter Snakes feed primarily on earthworms, slugs, and small amphibians. However, they have also been observed preying on small mammals and birds, including the Eastern Meadowlark and Bank Swallow.

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#3. Smooth Greensnake

• Opheodrys vernalis

Identifying Characteristics:

• Adults are SLENDER and typically range from 35 to 50 centimeters in length.
• Coloration is uniformly light green with a yellow or white underside and a red tongue with a black tip.
• Juveniles may be olive-green, blue-gray, or even brown until they shed their skin for the first time.

Also called Grass Snakes, these bright green snakes can be found in marshes, meadows, pastures, savannas, open woods, and along stream and lake edges. They prefer moist areas near permanent water sources.

Smooth Greensnake Range Map

They prey almost exclusively on insects and spiders and don’t use constriction; instead quickly striking and swallowing their prey alive.

Smooth Greensnakes hibernate during the winter in Manitoba, seeking shelter in old mammal burrows and abandoned anthills. They often hibernate communally with other small snakes. They emerge in the spring, typically in April, and are active until October.

Smooth Greensnakes rely on their EXCELLENT camouflage to avoid predators. They’re also agile and can flee quickly if they must.

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#4. Plains Hog-nosed Snake

• Heterodon nasicus

Identifying Characteristics:

• Adults range from 38 to 99 centimeters in length.
• Coloration is varying shades of brown with darker brown blotches on the back, two alternating rows of smaller dark spots down the sides, and large longitudinal blotches on the sides of the neck.
• Enlarged rostral (nose) scale.

The Plains Hog-nosed Snake strongly prefers open sandy or gravelly habitats. They’re excellent burrowers and also use old animal burrows for hibernation and protection from hot temperatures. They are only found in small parts of southern Manitoba

These snakes are best-known in Manitoba for their displays when disturbed!

When initially confronted, Plains Hog-nosed Snakes typically remain motionless or hide their head under their coils. They may also try to bury themselves or escape into a burrow.

However, if they’re further disturbed, they’ll spread their jaws and neck like a cobra and puff up their bodies. They may also hiss loudly and deliver false strikes with a closed mouth.

If these intimidating displays fail, the Plains Hog-nosed Snake will then twist as though they’re in pain, roll over on their back and play dead. They’ll be limp, open mouthed, and will remain this way even if picked up. They may also bleed from the mouth and cloaca, expel musk and fecal matter, and regurgitate recently eaten food.

If I saw one of these snakes do this display, I’d definitely leave it alone! But, unfortunately, they’re sometimes killed by people who are frightened by their cobra-like posture.

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#5. Red-bellied Snake

• Storeria occipitomaculata

Identifying Characteristics:  

• A small woodland species that grows between 10 to 25 cm (4-10 in) long.
• Colors vary from orange, gray, black, and brown.
• Their bright red or orange belly stands out from other species.   

This species is probably the “cutest” snake in Manitoba!

Red-bellied Snakes are small, docile, and have a bright red belly, which makes them VERY easy to identify.

Look for them under logs and leaf litter. They are also commonly found burrowed inside abandoned ant mounds. They are typically diurnal but can be hard to find due to their secretive nature.

Red-belled Snake Range Map

The colors represent the different subspecies of Storeria occipitomaculata.

Red-bellied Snakes have a unique behavior called “lip-curling,” where they curl their lips upward and flick their tongue when eating or feeling threatened. This behavior helps them catch their prey and also scares off potential predators.  

Unfortunately, people often kill this species out of fear. This is incredibly sad because these snakes are harmless and valuable to the ecosystem. In addition to this senseless slaughter, many are killed while crossing roads.   

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Do you need additional help identifying snakes in Manitoba?

Try this field guide!

• Peterson Field Guides to Reptiles and Amphibians

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Which of these SNAKES have you seen before in Manitoba?

Leave a comment below!

Also, if you enjoy this article, make sure to check out these other Manitoba guides!

• 7 FROGS Found in Manitoba! (ID Guide)

• The 32 MOST Common BIRDS That Are Seen in Manitoba!