Texas
Snakes in Dawson County
19 species have been documented here, 3 of them venomous.
Venomous snakes in Dawson 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.
Prairie RattlesnakeCrotalus viridisVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Northern CottonmouthAgkistrodon piscivorusVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Every snake recorded in Dawson County
Common Coachwhip
Masticophis flagellum
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Plains Hognose Snake
Heterodon nasicus
Harmless
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Gopher Snake
Pituophis catenifer
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Checkered Garter Snake
Thamnophis marcianus
Harmless
Glossy Snake
Arizona elegans
Harmless
Long-nosed Snake
Rhinocheilus lecontei
Harmless
Pine Snake
Pituophis melanoleucus
Harmless
Prairie Rattlesnake
Crotalus viridis
Venomous
Great Plains Ratsnake
Pantherophis emoryi
Harmless
Plains Black-headed Snake
Tantilla nigriceps
Harmless
Tantilla selmae
Harmless
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
Eastern Kingsnake
Lampropeltis getula
Harmless
Texas Blind Snake
Rena dulcis
Harmless
Chihuahuan Hook-nosed Snake
Gyalopion canum
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.