Pennsylvania
Snakes in Dauphin County
15 species have been documented here, 2 of them venomous.
Venomous snakes in Dauphin County
Full guide & what to do if bitten →
Timber RattlesnakeCrotalus horridusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Every snake recorded in Dauphin County

Common Garter Snake
Thamnophis sirtalis
Harmless

Common Watersnake
Nerodia sipedon
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

Eastern Ratsnake
Pantherophis alleghaniensis
Harmless

Timber Rattlesnake
Crotalus horridus
Venomous

Gray Ratsnake
Pantherophis spiloides
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

Eastern Copperhead
Agkistrodon contortrix
Venomous

Queensnake
Regina septemvittata
Harmless

North American Racer
Coluber constrictor
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

Eastern Hognose Snake
Heterodon platirhinos
Harmless

Common Wormsnake
Carphophis amoenus
Harmless

Smooth Earthsnake
Virginia valeriae
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.