Missouri
Snakes in Madison County
15 species have been documented here, 3 of them venomous.
Venomous snakes in Madison 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 Madison County
Common Watersnake
Nerodia sipedon
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
Western Ratsnake
Pantherophis obsoletus
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Common Garter Snake
Thamnophis sirtalis
Harmless
North American Racer
Coluber constrictor
Harmless
Common Wormsnake
Carphophis amoenus
Harmless
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.