Oklahoma
Snakes in Harper County
23 species have been documented here, 3 of them venomous.
Venomous snakes in Harper 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 MassasaugaSistrurus tergeminusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
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 Harper County
Gopher Snake
Pituophis catenifer
Harmless
Prairie Rattlesnake
Crotalus viridis
Venomous
Glossy Snake
Arizona elegans
Harmless
North American Racer
Coluber constrictor
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Checkered Garter Snake
Thamnophis marcianus
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
Western Massasauga
Sistrurus tergeminus
Venomous
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Common Coachwhip
Masticophis flagellum
Harmless
Long-nosed Snake
Rhinocheilus lecontei
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Great Plains Ratsnake
Pantherophis emoryi
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Lined Snake
Tropidoclonion lineatum
Harmless
Plains Hognose Snake
Heterodon nasicus
Harmless
Plains Black-headed Snake
Tantilla nigriceps
Harmless
Tantilla selmae
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.