Missouri
Snakes in McDonald County
24 species have been documented here, 3 of them venomous.
Venomous snakes in McDonald 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.
Northern CottonmouthAgkistrodon piscivorusVenomousHeavy 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 McDonald County
DeKay's Brownsnake
Storeria dekayi
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Ring-necked Snake
Diadophis punctatus
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
North American Racer
Coluber constrictor
Harmless
Common Coachwhip
Masticophis flagellum
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
Timber Rattlesnake
Crotalus horridus
Venomous
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Common Wormsnake
Carphophis amoenus
Harmless
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Flat-headed Snake
Tantilla gracilis
Harmless
Western Milksnake
Lampropeltis gentilis
Harmless
Western Worm Snake
Carphophis vermis
Harmless
Tantilla selmae
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.