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Home > Snakes > Western Terrestrial Garter Snake

Western Terrestrial Garter Snake

Western terrestrial garter snake is a species of snake belonging to the family Colubridae, found in western North America. The species is solitary when they are active, but hibernate communally during winter. The snake is diurnal.



    Kingdom Animalia
    Phylum Chordata
    Class Reptilia
    Order Squamata
    Suborder Serpentes
    Family Colubridae
    Genus Thamnophis
    Scientific Name Thamnophis elegans


    Length 46–104 cm (18–41 in)
    Weight 150 g (5.29 oz)
    Color Grayish-green upper surface with yellow bellies; a yellow stripe on the sides running along the length of the body and sometimes dark spots on the back
    Distribution Canada (Saskatchewan, Alberta, and Manitoba), United States (Western Oklahoma and Nebraska, Dakotas), Mexico (Baja California)
    Habitat Around lakes, slow flowing streams, also found in desert areas, plains, meadows, mountains, and forests
    Diet Young feed on insects, slugs, leeches, and worms while adults feed on salamanders, frog and toad larvae, slugs, small fish, lizards, leeches, and small mammals like shrews and rodents
    Hibernation Fact Hibernate during winter
    Predators Predatory birds, raccoons, opossums, mink
    Venom Fact Nonvenomous
    Breeding Season Spring
    Mode of Reproduction Ovoviviparous (producing young ones by means of eggs hatched inside the body of the parent)
    Litter Size 8 to 12 young ones
    Gestation Period 2 to 3 months
    Reproductive Age 2 years of age
    IUCN Conservation Status Least Concern

    Western Terrestrial Garter Snake Pictures Gallery

    Published on August 25th 2017 by under Snakes. Article was last reviewed on 14th June 2019.

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