Northern Water Snake

Often mistaken for cottonmouth. Harmless. Aggressive when handled.

GenusNerodia

RegionNorth AmericaEastern North America

Misidentification risk

Northern Water SnakeCottonmouth

Photo: Yann Kemper · Source: Wikimedia Commons · License: CC0

Northern Water Snake

Photo: Yann Kemper · Source: Wikimedia Commons · License: CC0

Northern Water Snake

Danger Score

Final Danger Score

Venom Core

Lethality weighted 55% (potency × yield). Clinical weighted 45% (real-world CFR).

Modifiers

Multiplicative scalers - amplify or reduce existing danger, can't create it from nothing.

× Speed (1.00)0.0

× Delivery (1.00)0.0

× Encounter (1.00)0.0

Speed = antivenom window. Delivery = fang efficiency. Encounter = exposure × temperament.

Score0