Oklahoma
Snakes in Harmon County
20 species have been documented here, 2 of them venomous.
Venomous snakes in Harmon 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.
Western MassasaugaSistrurus tergeminusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Every snake recorded in Harmon County
Ground Snake
Sonora semiannulata
Harmless
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Common Coachwhip
Masticophis flagellum
Harmless
Texas Blind Snake
Rena dulcis
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Chihuahuan Nightsnake
Hypsiglena jani
Harmless
Checkered Garter Snake
Thamnophis marcianus
Harmless
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Long-nosed Snake
Rhinocheilus lecontei
Harmless
Plains Black-headed Snake
Tantilla nigriceps
Harmless
Tantilla selmae
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Glossy Snake
Arizona elegans
Harmless
Sinaloan Nightsnake
Hypsiglena torquata
Harmless
Western Massasauga
Sistrurus tergeminus
Venomous
North American Racer
Coluber constrictor
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
Great Plains Ratsnake
Pantherophis emoryi
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.