Texas
Snakes in San Augustine County
23 species have been documented here, 5 of them venomous.
Venomous snakes in San Augustine 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.
Pygmy RattlesnakeSistrurus miliariusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Texas CoralsnakeMicrurus tenerVenomousRings of red, yellow, and black where red touches yellow; small rounded head and round pupils.
Every snake recorded in San Augustine County
Western Ratsnake
Pantherophis obsoletus
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
North American Racer
Coluber constrictor
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Banded Watersnake
Nerodia fasciata
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
DeKay's Brownsnake
Storeria dekayi
Harmless
Common Coachwhip
Masticophis flagellum
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Glossy Swampsnake
Liodytes rigida
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Diamondback Watersnake
Nerodia rhombifer
Harmless
Pygmy Rattlesnake
Sistrurus miliarius
Venomous
Texas Coralsnake
Micrurus tener
Venomous
Eastern Kingsnake
Lampropeltis getula
Harmless
Smooth Earthsnake
Virginia valeriae
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.