Bull Snake

Pituophis catenifer

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Bull Snake     Pituophis catenifer Theodore Roosevelt National Park, North Unit, North Dakota   

Bull Snake     Pituophis catenifer Theodore Roosevelt National Park, North Unit, North Dakota   

Bull Snake     Pituophis catenifer Theodore Roosevelt National Park, North Unit, North Dakota   

Bull Snake     Pituophis catenifer Theodore Roosevelt National Park, North Unit, North Dakota   

Bull Snake     Pituophis catenifer Drinking, Theodore Roosevelt National Park, North Unit, North Dakota