Native to North America, the non-venomous gray ratsnake is the largest snake in Canada, reaching approximately 190 centimetres in length.
NCC: Land Lines One human's trash is an endangered snake's treasure
Live snake hi-res stock photography and images - Alamy
Eastern milksnake (Lampropeltis triangulum): management plan 2015
NCC: Land Lines An introduction to Ontario's snakes
A species-specific digital PCR assay for the endangered blue racer (Coluber constrictor foxii) in Canada
Ultrastructural and chemical characteristics of melanoleucophores and
10 things you need to survive as an NCC intern
Conservation Lands Partnership - Leeds-Grenville Stewardship Council
Norfolk County Naturalist: Gray Ratsnake Norfolk
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