Snakes in Blanco 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.

• 
  Northern Cottonmouth

  Agkistrodon piscivorus

  ▲ Venomous

  Heavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.

• 
  Broad-banded Copperhead

  Agkistrodon laticinctus

  ▲ Venomous

  Heavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.

• 
  Eastern Copperhead

  Agkistrodon contortrix

  ▲ Venomous

  Heavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.

Every snake recorded in Blanco County

Western Ribbon Snake

Thamnophis proximus

Harmless

Western Ratsnake

Pantherophis obsoletus

Harmless

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

Rough Greensnake

Opheodrys aestivus

Harmless

Texas Blind Snake

Rena dulcis

Harmless

Texas Patch-nosed Snake

Salvadora lineata

Harmless

Checkered Garter Snake

Thamnophis marcianus

Harmless

Diamondback Watersnake

Nerodia rhombifer

Harmless

Western Diamond-backed Rattlesnake

Crotalus atrox

▲ Venomous

Common Coachwhip

Masticophis flagellum

Harmless

Great Plains Ground Snake

Sonora episcopa

Harmless

Eastern Hognose Snake

Heterodon platirhinos

Harmless

Texas Coralsnake

Micrurus tener

▲ Venomous

Flat-headed Snake

Tantilla gracilis

Harmless

Northern Cottonmouth

Agkistrodon piscivorus

▲ Venomous

Black-necked Garter Snake

Thamnophis cyrtopsis

Harmless

Ring-necked Snake

Diadophis punctatus

Harmless

Striped Whipsnake

Masticophis taeniatus

Harmless

Rough Earthsnake

Virginia striatula

Harmless

Great Plains Ratsnake

Pantherophis emoryi

Harmless

DeKay's Brownsnake

Storeria dekayi

Harmless

Broad-banded Copperhead

Agkistrodon laticinctus

▲ Venomous

Ground Snake

Sonora semiannulata

Harmless

Plains Black-headed Snake

Tantilla nigriceps

Harmless

Gopher Snake

Pituophis catenifer

Harmless

Eastern Copperhead

Agkistrodon contortrix

▲ Venomous

Compiled from verified GBIF & iNaturalist observations. Informational only.

Snakes in Blanco County: FAQ

Are there venomous snakes in Blanco County, Texas?

Yes. 5 venomous snake species have verified records in Blanco County, Texas, including Western Diamond-backed Rattlesnake, Texas Coralsnake, Northern Cottonmouth, Broad-banded Copperhead. Most snakes in Blanco County, Texas, however, are harmless.

How many snake species live in Blanco County, Texas?

20+ snake species have verified records in Blanco County, Texas, of which 5 are venomous.

What is the most commonly seen snake in Blanco County, Texas?

The Western Ribbon Snake is the most frequently reported snake in Blanco County, Texas, based on verified wildlife observations.

What should I do if I see a venomous snake in Blanco 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.

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