Snakes in Terrell 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.

• 
  Eastern Copperhead

  Agkistrodon contortrix

  ▲ Venomous

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

• 
  Rock Rattlesnake

  Crotalus lepidus

  ▲ Venomous

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

• 
  Eastern Black-tailed Rattlesnake

  Crotalus ornatus

  ▲ Venomous

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

• 
  Broad-banded Copperhead

  Agkistrodon laticinctus

  ▲ Venomous

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

• 
  Western Black-tailed Rattlesnake

  Crotalus molossus

  ▲ Venomous

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

Every snake recorded in Terrell County

Western Diamond-backed Rattlesnake

Crotalus atrox

▲ Venomous

Common Coachwhip

Masticophis flagellum

Harmless

Eastern Copperhead

Agkistrodon contortrix

▲ Venomous

Rock Rattlesnake

Crotalus lepidus

▲ Venomous

Trans-pecos Ratsnake

Bogertophis subocularis

Harmless

Chihuahuan Nightsnake

Hypsiglena jani

Harmless

Long-nosed Snake

Rhinocheilus lecontei

Harmless

Eastern Black-tailed Rattlesnake

Crotalus ornatus

▲ Venomous

Gray-banded Kingsnake

Lampropeltis alterna

Harmless

Western Ribbon Snake

Thamnophis proximus

Harmless

Broad-banded Copperhead

Agkistrodon laticinctus

▲ Venomous

Ground Snake

Sonora semiannulata

Harmless

Gopher Snake

Pituophis catenifer

Harmless

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

Great Plains Ground Snake

Sonora episcopa

Harmless

Southwestern Blackhead Snake

Tantilla hobartsmithi

Harmless

Striped Whipsnake

Masticophis taeniatus

Harmless

Great Plains Ratsnake

Pantherophis emoryi

Harmless

Chihuahuan Hook-nosed Snake

Gyalopion canum

Harmless

Rough Greensnake

Opheodrys aestivus

Harmless

Black-necked Garter Snake

Thamnophis cyrtopsis

Harmless

Texas Blind Snake

Rena dulcis

Harmless

Ring-necked Snake

Diadophis punctatus

Harmless

Western Black-tailed Rattlesnake

Crotalus molossus

▲ Venomous

Big Bend Blackhead Snake

Tantilla cucullata

Harmless

Plains Black-headed Snake

Tantilla nigriceps

Harmless

Baird's Ratsnake

Pantherophis bairdi

Harmless

Mexican Hognose Snake

Heterodon kennerlyi

Harmless

Pine Snake

Pituophis melanoleucus

Harmless

Glossy Snake

Arizona elegans

Harmless

Western Milksnake

Lampropeltis gentilis

Harmless

Red Cornsnake

Pantherophis guttatus

Harmless

Western Threadsnake

Rena humilis

Harmless

Eastern Milksnake

Lampropeltis triangulum

Harmless

Common Ribbon Snake

Thamnophis saurita

Harmless

Western Ratsnake

Pantherophis obsoletus

Harmless

Checkered Garter Snake

Thamnophis marcianus

Harmless

Flat-headed Snake

Tantilla gracilis

Harmless

Plains Hognose Snake

Heterodon nasicus

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Snakes in Terrell County: FAQ

Are there venomous snakes in Terrell County, Texas?

Yes. 6 venomous snake species have verified records in Terrell County, Texas, including Western Diamond-backed Rattlesnake, Eastern Copperhead, Rock Rattlesnake, Eastern Black-tailed Rattlesnake. Most snakes in Terrell County, Texas, however, are harmless.

How many snake species live in Terrell County, Texas?

30+ snake species have verified records in Terrell County, Texas, of which 6 are venomous.

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

The Western Diamond-backed Rattlesnake is the most frequently reported snake in Terrell County, Texas, based on verified wildlife observations.

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