Snakes in Grayson County

• 
  Northern Cottonmouth

  Agkistrodon piscivorus

  ▲ Venomous

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

• 
  Timber Rattlesnake

  Crotalus horridus

  ▲ Venomous

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

• 
  Eastern Copperhead

  Agkistrodon contortrix

  ▲ 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.

• 
  Pygmy Rattlesnake

  Sistrurus miliarius

  ▲ Venomous

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

Every snake recorded in Grayson County

Northern Cottonmouth

Agkistrodon piscivorus

▲ Venomous

Western Ratsnake

Pantherophis obsoletus

Harmless

Diamondback Watersnake

Nerodia rhombifer

Harmless

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

Timber Rattlesnake

Crotalus horridus

▲ Venomous

Western Ribbon Snake

Thamnophis proximus

Harmless

Rough Earthsnake

Virginia striatula

Harmless

North American Racer

Coluber constrictor

Harmless

DeKay's Brownsnake

Storeria dekayi

Harmless

Lined Snake

Tropidoclonion lineatum

Harmless

Eastern Copperhead

Agkistrodon contortrix

▲ Venomous

Rough Greensnake

Opheodrys aestivus

Harmless

Broad-banded Copperhead

Agkistrodon laticinctus

▲ Venomous

Prairie Kingsnake

Lampropeltis calligaster

Harmless

Speckled Kingsnake

Lampropeltis holbrooki

Harmless

Common Garter Snake

Thamnophis sirtalis

Harmless

Common Coachwhip

Masticophis flagellum

Harmless

Flat-headed Snake

Tantilla gracilis

Harmless

Ring-necked Snake

Diadophis punctatus

Harmless

Texas Blind Snake

Rena dulcis

Harmless

Gopher Snake

Pituophis catenifer

Harmless

Common Ribbon Snake

Thamnophis saurita

Harmless

Eastern Hognose Snake

Heterodon platirhinos

Harmless

Common Watersnake

Nerodia sipedon

Harmless

Pygmy Rattlesnake

Sistrurus miliarius

▲ Venomous

Eastern Kingsnake

Lampropeltis getula

Harmless

Ground Snake

Sonora semiannulata

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Snakes in Grayson County: FAQ

Are there venomous snakes in Grayson County, Texas?

Yes. 5 venomous snake species have verified records in Grayson County, Texas, including Northern Cottonmouth, Timber Rattlesnake, Eastern Copperhead, Broad-banded Copperhead. Most snakes in Grayson County, Texas, however, are harmless.

How many snake species live in Grayson County, Texas?

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

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

The Northern Cottonmouth is the most frequently reported snake in Grayson County, Texas, based on verified wildlife observations.

What should I do if I see a venomous snake in Grayson 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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