Texas
Snakes in Calhoun County
33 species have been documented here, 6 of them venomous.
Venomous snakes in Calhoun 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.
Western Diamond-backed RattlesnakeCrotalus atroxVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Texas CoralsnakeMicrurus tenerVenomousRings of red, yellow, and black where red touches yellow; small rounded head and round pupils.
Eastern CoralsnakeMicrurus fulviusVenomousRings of red, yellow, and black where red touches yellow; small rounded head and round pupils.
Broad-banded CopperheadAgkistrodon laticinctusVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Western MassasaugaSistrurus tergeminusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Every snake recorded in Calhoun County
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
Western Ribbon Snake
Thamnophis proximus
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Rough Greensnake
Opheodrys aestivus
Harmless
Saltmarsh Snake
Nerodia clarkii
Harmless
Common Coachwhip
Masticophis flagellum
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Great Plains Ratsnake
Pantherophis emoryi
Harmless
Texas Coralsnake
Micrurus tener
Venomous
North American Racer
Coluber constrictor
Harmless
Rough Earthsnake
Virginia striatula
Harmless
Checkered Garter Snake
Thamnophis marcianus
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Diamondback Watersnake
Nerodia rhombifer
Harmless
Mississippi Green Watersnake
Nerodia cyclopion
Harmless
Graham's Crawfish Snake
Regina grahamii
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
Mudsnake
Farancia abacura
Harmless
Flat-headed Snake
Tantilla gracilis
Harmless
Tantilla selmae
Harmless
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Banded Watersnake
Nerodia fasciata
Harmless
Texas Blind Snake
Rena dulcis
Harmless
Eastern Coralsnake
Micrurus fulvius
Venomous
Common Garter Snake
Thamnophis sirtalis
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
Brahminy Blindsnake
Indotyphlops braminus
Harmless
Broad-banded Copperhead
Agkistrodon laticinctus
Venomous
Western Massasauga
Sistrurus tergeminus
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.