Native to North America, the non-venomous gray ratsnake is the largest snake in Canada, reaching approximately 190 centimetres in length.
NCC: Gray ratsnake
Snakes! - Page 23 - Team-BHP
Explore Elbow Lake's Property
Lake Erie Watersnake Recovery Strategy
Norfolk County Naturalist: Gray Ratsnake Norfolk
Frontenac Arch Biosphere
Leucophore appearance and origins in zebrafish. (A) Pigment cells
Blue Racer Snake Breeding Info & Care Sheet (With Pictures)
NCC: Gray ratsnake