Snakes in Matagorda County

• 
  Northern Cottonmouth

  Agkistrodon piscivorus

  ▲ Venomous

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

• 
  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.

• 
  Eastern Copperhead

  Agkistrodon contortrix

  ▲ Venomous

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

• 
  Texas Coralsnake

  Micrurus tener

  ▲ Venomous

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

• 
  Timber Rattlesnake

  Crotalus horridus

  ▲ Venomous

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

Every snake recorded in Matagorda County

Northern Cottonmouth

Agkistrodon piscivorus

▲ Venomous

Western Diamond-backed Rattlesnake

Crotalus atrox

▲ Venomous

Western Ribbon Snake

Thamnophis proximus

Harmless

Western Ratsnake

Pantherophis obsoletus

Harmless

Banded Watersnake

Nerodia fasciata

Harmless

DeKay's Brownsnake

Storeria dekayi

Harmless

Common Coachwhip

Masticophis flagellum

Harmless

Eastern Copperhead

Agkistrodon contortrix

▲ Venomous

Saltmarsh Snake

Nerodia clarkii

Harmless

Common Garter Snake

Thamnophis sirtalis

Harmless

Diamondback Watersnake

Nerodia rhombifer

Harmless

Speckled Kingsnake

Lampropeltis holbrooki

Harmless

Rough Greensnake

Opheodrys aestivus

Harmless

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

Rough Earthsnake

Virginia striatula

Harmless

Texas Coralsnake

Micrurus tener

▲ Venomous

Eastern Kingsnake

Lampropeltis getula

Harmless

Mississippi Green Watersnake

Nerodia cyclopion

Harmless

Eastern Hognose Snake

Heterodon platirhinos

Harmless

Graham's Crawfish Snake

Regina grahamii

Harmless

North American Racer

Coluber constrictor

Harmless

Prairie Kingsnake

Lampropeltis calligaster

Harmless

Timber Rattlesnake

Crotalus horridus

▲ Venomous

Checkered Garter Snake

Thamnophis marcianus

Harmless

Texas Blind Snake

Rena dulcis

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Snakes in Matagorda County: FAQ

Are there venomous snakes in Matagorda County, Texas?

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

How many snake species live in Matagorda County, Texas?

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

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

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

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