Louisiana
Snakes in Madison County
16 species have been documented here, 3 of them venomous.
Venomous snakes in Madison 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.
Northern CottonmouthAgkistrodon piscivorusVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Every snake recorded in Madison County
Western Ribbon Snake
Thamnophis proximus
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Banded Watersnake
Nerodia fasciata
Harmless
North American Racer
Coluber constrictor
Harmless
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
Eastern Copperhead
Agkistrodon contortrix
Venomous
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Diamondback Watersnake
Nerodia rhombifer
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Mudsnake
Farancia abacura
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.