Common Gartersnake
The common gartersnake (Thamnophis sirtalis) is a relatively small, striped, non-venomous snake. It is one of the most widespread snake species in North America and its range extends farther north than any other North American snake. In Canada, it is found in every province except Newfoundland and Labrador, and as far north as James Bay and into the southernmost Northwest Territories. The common gartersnake is broken into five subspecies across Canada: the Maritime gartersnake (Thamnophis s. pallidulus; PEI, NS, NB, QC), the Eastern gartersnake (Thamnophis s. sirtalis; QC, ON), the red-sided gartersnake (Thamnophis s. parietalis; ON, MB, SK, AB, BC, NWT), the valley gartersnake (Thamnophis s. fitchi; BC), and the Puget Sound gartersnake (Thamnophis s. pickeringii; BC).