Native to North America, the non-venomous gray ratsnake is the largest snake in Canada, reaching approximately 190 centimetres in length.
Live snake hi-res stock photography and images - Alamy
NCC: Land Lines 15 fun facts about Canadian snakes
Lake Erie watersnake (Nerodia sipedon insularum): COSEWIC assessment and status report 2015
Snake up view hi-res stock photography and images - Page 13 - Alamy
34 Types of SNAKES That Live in North Carolina! (ID Guide) - Bird Watching HQ
Explore Elbow Lake's Property
NCC: Land Lines Archive Page 16 - Topic interns
Scientific Name of Rat Snake - History, Classification and FAQs - Infinity Learn by Sri Chaitanya
A species-specific digital PCR assay for the endangered blue racer (Coluber constrictor foxii) in Canada
NCC: Land Lines 15 fun facts about Canadian snakes
Bite snake hi-res stock photography and images - Page 23 - Alamy
Norfolk County Naturalist: Gray Ratsnake Norfolk
