Missouri
Snakes in Washington County
23 species have been documented here, 2 of them venomous.
Venomous snakes in Washington County
Full guide & what to do if bitten →
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Timber RattlesnakeCrotalus horridusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Washington County
Ring-necked Snake
Diadophis punctatus
Harmless
Rough Earthsnake
Virginia striatula
Harmless
North American Racer
Coluber constrictor
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Eastern Milksnake
Lampropeltis triangulum
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Western Worm Snake
Carphophis vermis
Harmless
Flat-headed Snake
Tantilla gracilis
Harmless
Tantilla selmae
Harmless
Common Watersnake
Nerodia sipedon
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Great Plains Ratsnake
Pantherophis emoryi
Harmless
Smooth Earthsnake
Virginia valeriae
Harmless
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Common Wormsnake
Carphophis amoenus
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
Lined Snake
Tropidoclonion lineatum
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.