Species guide
Northern water snake
HarmlessNerodia sipedon
What does Northern water snake look like?
A heavy-bodied snake, brown to grey with dark crossbands that break into blotches toward the tail, usually found in or near water. Non-venomous.
Is Northern water snake dangerous?
Non-venomous, though it will bite hard if cornered and flatten its head defensively. It's often killed by mistake for a cottonmouth.
Commonly confused with
- Cottonmouth: venomous, found further south; gapes a white mouth in warning
What should I do about Northern water snake?
Give it space and leave it alone; it poses no real threat.