Texas
Snakes in Frio County
21 species have been documented here, 2 of them venomous.
Venomous snakes in Frio 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.
Texas CoralsnakeMicrurus tenerVenomousRings of red, yellow, and black where red touches yellow; small rounded head and round pupils.
Every snake recorded in Frio County
Checkered Garter Snake
Thamnophis marcianus
Harmless
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Great Plains Ratsnake
Pantherophis emoryi
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Central American Indigo Snake
Drymarchon melanurus
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Common Coachwhip
Masticophis flagellum
Harmless
Texas Blind Snake
Rena dulcis
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Diamondback Watersnake
Nerodia rhombifer
Harmless
Long-nosed Snake
Rhinocheilus lecontei
Harmless
Chihuahuan Nightsnake
Hypsiglena jani
Harmless
Desert Kingsnake
Lampropeltis splendida
Harmless
Schott's Whipsnake
Masticophis schotti
Harmless
Tamaulipan Milksnake
Lampropeltis annulata
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Texas Patch-nosed Snake
Salvadora lineata
Harmless
Red Cornsnake
Pantherophis guttatus
Harmless
Texas Coralsnake
Micrurus tener
Venomous
Glossy Snake
Arizona elegans
Harmless
Pine Snake
Pituophis melanoleucus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Frio County: FAQ
- Are there venomous snakes in Frio County, Texas?
- Yes. 2 venomous snake species have verified records in Frio County, Texas, including Western Diamond-backed Rattlesnake, Texas Coralsnake. Most snakes in Frio County, Texas, however, are harmless.
- How many snake species live in Frio County, Texas?
- 20+ snake species have verified records in Frio County, Texas, of which 2 are venomous.
- What is the most commonly seen snake in Frio County, Texas?
- The Checkered Garter Snake is the most frequently reported snake in Frio County, Texas, based on verified wildlife observations.
- What should I do if I see a venomous snake in Frio County, Texas?
- 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.