Texas
Snakes in Mason County
35 species have been documented here, 6 of them venomous.
Venomous snakes in Mason County
Full guide & what to do if bitten →
Western Diamond-backed RattlesnakeCrotalus atroxVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Broad-banded CopperheadAgkistrodon laticinctusVenomousHeavy 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.
Texas CoralsnakeMicrurus tenerVenomousRings of red, yellow, and black where red touches yellow; small rounded head and round pupils.
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Eastern CoralsnakeMicrurus fulviusVenomousRings of red, yellow, and black where red touches yellow; small rounded head and round pupils.
Every snake recorded in Mason County
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Common Coachwhip
Masticophis flagellum
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Checkered Garter Snake
Thamnophis marcianus
Harmless
Striped Whipsnake
Masticophis taeniatus
Harmless
Broad-banded Copperhead
Agkistrodon laticinctus
Venomous
Glossy Snake
Arizona elegans
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Diamondback Watersnake
Nerodia rhombifer
Harmless
Texas Blind Snake
Rena dulcis
Harmless
Texas Patch-nosed Snake
Salvadora lineata
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Red Cornsnake
Pantherophis guttatus
Harmless
Long-nosed Snake
Rhinocheilus lecontei
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
Texas Coralsnake
Micrurus tener
Venomous
Great Plains Ground Snake
Sonora episcopa
Harmless
Black-necked Garter Snake
Thamnophis cyrtopsis
Harmless
Tantilla selmae
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Great Plains Ratsnake
Pantherophis emoryi
Harmless
Flat-headed Snake
Tantilla gracilis
Harmless
Eastern Coralsnake
Micrurus fulvius
Venomous
Chihuahuan Hook-nosed Snake
Gyalopion canum
Harmless
Rough Earthsnake
Virginia striatula
Harmless
Chihuahuan Nightsnake
Hypsiglena jani
Harmless
Ground Snake
Sonora semiannulata
Harmless
Pine Snake
Pituophis melanoleucus
Harmless
Plains Black-headed Snake
Tantilla nigriceps
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.