Illinois
Snakes in Massac County
21 species have been documented here, 2 of them venomous.
Venomous snakes in Massac County
Full guide & what to do if bitten →
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 Massac County

Northern Cottonmouth
Agkistrodon piscivorus
Venomous

Common Watersnake
Nerodia sipedon
Harmless

Plain-bellied Watersnake
Nerodia erythrogaster
Harmless

Eastern Milksnake
Lampropeltis triangulum
Harmless

North American Racer
Coluber constrictor
Harmless

Black Kingsnake
Lampropeltis nigra
Harmless

Common Ribbon Snake
Thamnophis saurita
Harmless

Ring-necked Snake
Diadophis punctatus
Harmless

Gray Ratsnake
Pantherophis spiloides
Harmless

Diamondback Watersnake
Nerodia rhombifer
Harmless

Mudsnake
Farancia abacura
Harmless

DeKay's Brownsnake
Storeria dekayi
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

Common Wormsnake
Carphophis amoenus
Harmless

Prairie Kingsnake
Lampropeltis calligaster
Harmless

Eastern Copperhead
Agkistrodon contortrix
Venomous

Smooth Earthsnake
Virginia valeriae
Harmless

Eastern Kingsnake
Lampropeltis getula
Harmless

Banded Watersnake
Nerodia fasciata
Harmless

Red-bellied Snake
Storeria occipitomaculata
Harmless

Eastern Hognose Snake
Heterodon platirhinos
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.