Texas
Snakes in Hartley County
15 species have been documented here, 3 of them venomous.
Venomous snakes in Hartley County
Full guide & what to do if bitten →
Prairie RattlesnakeCrotalus viridisVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Eastern CopperheadAgkistrodon contortrixVenomousHeavy 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.
Every snake recorded in Hartley County

Western Ribbon Snake
Thamnophis proximus
Harmless

Prairie Rattlesnake
Crotalus viridis
Venomous

Glossy Snake
Arizona elegans
Harmless

Checkered Garter Snake
Thamnophis marcianus
Harmless

Gopher Snake
Pituophis catenifer
Harmless

Common Coachwhip
Masticophis flagellum
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless

Plain-bellied Watersnake
Nerodia erythrogaster
Harmless

Eastern Hognose Snake
Heterodon platirhinos
Harmless

Lined Snake
Tropidoclonion lineatum
Harmless

Eastern Copperhead
Agkistrodon contortrix
Venomous

Plains Hognose Snake
Heterodon nasicus
Harmless

Pine Snake
Pituophis melanoleucus
Harmless

Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous

Long-nosed Snake
Rhinocheilus lecontei
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.