Massachusetts
Snakes in Middlesex County
14 species have been documented here, 2 of them venomous.
Venomous snakes in Middlesex 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 Middlesex County
Common Garter Snake
Thamnophis sirtalis
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
North American Racer
Coluber constrictor
Harmless
Common Ribbon Snake
Thamnophis saurita
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Timber Rattlesnake
Crotalus horridus
Venomous
Red Cornsnake
Pantherophis guttatus
Harmless
Brahminy Blindsnake
Indotyphlops braminus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.