Pennsylvania
Snakes in Sullivan County
9 species have been documented here, 1 of them venomous.
Venomous snakes in Sullivan 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.
Every snake recorded in Sullivan County
Common Garter Snake
Thamnophis sirtalis
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Eastern Milksnake
Lampropeltis triangulum
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Eastern Ratsnake
Pantherophis alleghaniensis
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Sullivan County: FAQ
- Are there venomous snakes in Sullivan County, Pennsylvania?
- Yes. 1 venomous snake species has verified records in Sullivan County, Pennsylvania, including Timber Rattlesnake. Most snakes in Sullivan County, Pennsylvania, however, are harmless.
- How many snake species live in Sullivan County, Pennsylvania?
- 9 snake species have verified records in Sullivan County, Pennsylvania, of which 1 is venomous.
- What is the most commonly seen snake in Sullivan County, Pennsylvania?
- The Common Garter Snake is the most frequently reported snake in Sullivan County, Pennsylvania, based on verified wildlife observations.
- What should I do if I see a venomous snake in Sullivan County, Pennsylvania?
- Keep your distance and do not try to catch or kill it. Most bites happen when people handle or corner a snake. If someone is bitten, contact local emergency services or poison control immediately.