Agkistrodon piscivorus is a species of venomous snake, a pit viper in the subfamily Crotalinae of the family Viperidae. It is one of the world's few semiaquatic vipers, and is native to the Southeaste
This snake was found on the edge of a creek in Oklahoma.
Geographic distribution of the two species of cottonmouth, Agkistrodon piscivorus and Agkistrodon conanti
A cypress swamp in Big Cypress National Preserve, south Florida
The common watersnake is a species of large, nonvenomous, common snake in the family Colubridae. The species is native to North America. It is frequently mistaken for the venomous cottonmouth.
Northern watersnake basking west of Ottawa, Ontario
N. s. sipedon eating fish
Mature northern watersnake sunning itself near Battersea, Ontario