New Mexico
Snakes in Union County
29 species have been documented here, 5 of them venomous.
Venomous snakes in Union 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.
Western Diamond-backed RattlesnakeCrotalus atroxVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Rock RattlesnakeCrotalus lepidusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Eastern Black-tailed RattlesnakeCrotalus ornatusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Western MassasaugaSistrurus tergeminusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Every snake recorded in Union County
Prairie Rattlesnake
Crotalus viridis
Venomous
Gopher Snake
Pituophis catenifer
Harmless
Western Terrestrial Garter Snake
Thamnophis elegans
Harmless
Plains Garter Snake
Thamnophis radix
Harmless
Common Coachwhip
Masticophis flagellum
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Lined Snake
Tropidoclonion lineatum
Harmless
Texas Blind Snake
Rena dulcis
Harmless
Plains Hognose Snake
Heterodon nasicus
Harmless
Plains Black-headed Snake
Tantilla nigriceps
Harmless
Sinaloan Nightsnake
Hypsiglena torquata
Harmless
Tantilla selmae
Harmless
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Glossy Snake
Arizona elegans
Harmless
North American Racer
Coluber constrictor
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Great Plains Ratsnake
Pantherophis emoryi
Harmless
Rock Rattlesnake
Crotalus lepidus
Venomous
Pine Snake
Pituophis melanoleucus
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
Black-necked Garter Snake
Thamnophis cyrtopsis
Harmless
Ground Snake
Sonora semiannulata
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Eastern Black-tailed Rattlesnake
Crotalus ornatus
Venomous
Western Massasauga
Sistrurus tergeminus
Venomous
Red Cornsnake
Pantherophis guttatus
Harmless
Western Milksnake
Lampropeltis gentilis
Harmless
Levant Rat Snake
Elaphe druzei
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.