Snakes in Frio County

• 
  Western Diamond-backed Rattlesnake

  Crotalus atrox

  ▲ Venomous

  Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.

• 
  Texas Coralsnake

  Micrurus tener

  ▲ Venomous

  Rings of red, yellow, and black where red touches yellow; small rounded head and round pupils.

• 
  Eastern Massasauga

  Sistrurus catenatus

  ▲ Venomous

  Stout, dark-blotched body, nine large scales on the crown, and a small rattle.

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

No photo

Mexican Whip Snake

Masticophis lineatus

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

Rough Greensnake

Opheodrys aestivus

Harmless

Eastern Kingsnake

Lampropeltis getula

Harmless

Eastern Massasauga

Sistrurus catenatus

▲ Venomous

Striped Whipsnake

Masticophis taeniatus

Harmless

Flat-headed Snake

Tantilla gracilis

Harmless

Ground Snake

Sonora semiannulata

Harmless

Yellow-tailed Indigo Snake

Drymarchon corais

Harmless

Taylor’s Ground Snake

Sonora taylori

Harmless

Tamaulipan Hook-nosed Snake

Ficimia streckeri

Harmless

Tantilla selmae

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Nearby counties