Common Garter Snake

Thamnophis sirtalis

The common garter snake is one of the most well known snakes in Minnesota. They live in many different rural and suburban areas and are found on hilltops, along rivers, and in backyards.


General description: The common garter snake and it's cousin, the plains garter snake, are medium-sized snakes reaching up to 3 feet in length.

Length: Medium-sized snakes reaching up to 3 feet in length

Color: Black with three, yellow lengthwise stripes on their back and sides


Garter snakes give birth to their young, typically in August or September. Baby garters live on their own after birth, and more than half die before they are a year old.


Garter snakes eat a varied diet including frogs, small mammals, earthworms and insects.

Common Garter Snake


Crows, ravens, weasels, mink, raccoons, foxes, ground squirrels, skunks, hawks, owls.

Habitat and range

Garter snakes are found throughout Minnesota. During the winter, to keep from freezing, they hibernate below the frost line. They usually find a rock crevice, an ant mound or a tunnel made by a burrowing animal. These winter dens are used by garter snakes year after year.

Population and management

Garter snakes are important because they eat destructive rodents (mice) and should not be killed. All snakes are considered protected wild animals in Minnesota.

Fun facts

Although they are not venomous, garter snakes may bite when handled, and they may defecate on the person holding them, releasing a foul smelling odor.

Range map: common garter snake

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