Garter snake is the common name for small to medium-sized snakes belonging to the genus Thamnophis in the family Colubridae. Native to North and Central America, species in the genus Thamnophis can be found in all of the lower 48 United States, and nearly all of the Canadian provinces south of the Northwest Territories and Nunavut—with the exception of Newfoundland and Labrador. They are found from the subarctic plains of west-central Canada east through Ontario and Quebec; from the Maritime Provinces and south to Florida, across the southern and central U.S. into the arid regions of the southwest and México, Guatemala and south to the neotropics and Costa Rica.
The plains garter snake is a species of garter snake native to most of the central United States as far north as Canada and as far south as Texas. It has a distinctive orange or yellow stripe from its head to tail, and the rest of its body is mainly a gray-green color. The snake is commonly found living near water sources such as streams and ponds, but can also be found in urban areas and vacant lots. Although the IUCN lists the species as "Least Concern", some states have given it their own special status. This species is mildly venomous, although the venom is not toxic to humans.
The two-striped garter snake is a species of aquatic garter snake, which is endemic to western North America.
Thamnophis copei, Cope's mountain meadow snake, is a vulnerable species of snake in the family Colubridae. The species was originally described by Alfredo Dugès in 1897, and is endemic to Mexico. It is the type species of the genus AdelophisDugès, 1879.
The western terrestrial garter snake is a western North American species of colubrid snake. At least five subspecies are recognized.
The narrow-headed garter snake, Thamnophis rufipunctatus, is a species of garter snake, endemic to the southwestern United States and adjacent northwestern Mexico. Its common names also include narrowhead garter snake and narrowhead watersnake.
Thamnophis cyrtopsis, the blackneck garter snake, is a species of garter snake of the genus Thamnophis. It is native to the southwestern United States, Mexico and Guatemala, and can be found in a wide range of different habitats, often near water sources.
The montane garter snake is a species of snake of the family Colubridae. It is found in Mexico.
The blackbelly garter snake is a species of snake of the family Colubridae. It is found in Mexico.
The goldenhead garter snake is a species of snake of the family Colubridae. It is found in Mexico.
Thamnophis couchii, commonly known as Couch's garter snake, the Sierra garter snake, or the western aquatic garter snake, is a species of snake in the family Colubridae. The species is endemic to the western United States.
The short-tail alpine garter snake is a species of snake of the family Colubridae. It is found in Mexico.
Rossman's garter snake is a species of snake in the family Colubridae. The species is endemic to Mexico.
The Mexican garter snake is a species of snake of the family Colubridae. It is found in Mexico and in the United States. This essentially harmless snake is semi-aquatic and most of the 10 recognized subspecies are restricted to lake basins in Mexico.
The longtail alpine garter snake is a species of snake of the family Colubridae. It is found in Mexico.
The yellow-throated garter snake is a species of snake of the family Colubridae. It is found in Mexico.
The Tepalcatepec Valley garter snake is a species of snake of the family Colubridae. It is found in Mexico.
Sumichrast's garter snake is a species of snake in the family Colubridae. The species is endemic to Mexico.
The Southern Durango spotted garter snake is a species of snake of the family Colubridae. It is endemic to the state of Durango, Mexico.
The Mexican wandering garter snake is a species of snake of the family Colubridae. It is endemic to Mexico.
