Oklahoma
Snakes in Harmon County
13 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
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
Gopher Snake
Pituophis catenifer
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Glossy Snake
Arizona elegans
Harmless
Western Massasauga
Sistrurus tergeminus
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Harmon County: FAQ
- Are there venomous snakes in Harmon County, Oklahoma?
- Yes. 2 venomous snake species have verified records in Harmon County, Oklahoma, including Western Diamond-backed Rattlesnake, Western Massasauga. Most snakes in Harmon County, Oklahoma, however, are harmless.
- How many snake species live in Harmon County, Oklahoma?
- 10+ snake species have verified records in Harmon County, Oklahoma, of which 2 are venomous.
- What is the most commonly seen snake in Harmon County, Oklahoma?
- The Ground Snake is the most frequently reported snake in Harmon County, Oklahoma, based on verified wildlife observations.
- What should I do if I see a venomous snake in Harmon County, Oklahoma?
- Keep your distance and do not try to catch or kill it. Most bites happen when people handle or corner a snake. If someone is bitten, contact local emergency services or poison control immediately.