Snakes in San Patricio 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.

• 
  Northern Cottonmouth

  Agkistrodon piscivorus

  ▲ 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.

• 
  Eastern Coralsnake

  Micrurus fulvius

  ▲ Venomous

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

Every snake recorded in San Patricio County

Western Diamond-backed Rattlesnake

Crotalus atrox

▲ Venomous

Diamondback Watersnake

Nerodia rhombifer

Harmless

Checkered Garter Snake

Thamnophis marcianus

Harmless

Great Plains Ratsnake

Pantherophis emoryi

Harmless

Western Ribbon Snake

Thamnophis proximus

Harmless

No photo

Mexican Whip Snake

Masticophis lineatus

Harmless

Northern Cottonmouth

Agkistrodon piscivorus

▲ Venomous

Rough Greensnake

Opheodrys aestivus

Harmless

Common Coachwhip

Masticophis flagellum

Harmless

Texas Coralsnake

Micrurus tener

▲ Venomous

Western Ratsnake

Pantherophis obsoletus

Harmless

DeKay's Brownsnake

Storeria dekayi

Harmless

Central American Indigo Snake

Drymarchon melanurus

Harmless

Texas Blind Snake

Rena dulcis

Harmless

Rough Earthsnake

Virginia striatula

Harmless

Schott's Whipsnake

Masticophis schotti

Harmless

Eastern Kingsnake

Lampropeltis getula

Harmless

North American Racer

Coluber constrictor

Harmless

Saltmarsh Snake

Nerodia clarkii

Harmless

Tantilla selmae

Harmless

Red Cornsnake

Pantherophis guttatus

Harmless

Flat-headed Snake

Tantilla gracilis

Harmless

Desert Kingsnake

Lampropeltis splendida

Harmless

Gopher Snake

Pituophis catenifer

Harmless

Eastern Hognose Snake

Heterodon platirhinos

Harmless

Pine Snake

Pituophis melanoleucus

Harmless

Plain-bellied Watersnake

Nerodia erythrogaster

Harmless

Speckled Kingsnake

Lampropeltis holbrooki

Harmless

Prairie Kingsnake

Lampropeltis calligaster

Harmless

Striped Whipsnake

Masticophis taeniatus

Harmless

Glossy Snake

Arizona elegans

Harmless

Yellow-tailed Indigo Snake

Drymarchon corais

Harmless

Brahminy Blindsnake

Indotyphlops braminus

Harmless

Long-nosed Snake

Rhinocheilus lecontei

Harmless

Scarletsnake

Cemophora coccinea

Harmless

Mudsnake

Farancia abacura

Harmless

Eastern Coralsnake

Micrurus fulvius

▲ Venomous

Plains Black-headed Snake

Tantilla nigriceps

Harmless

Taylor’s Ground Snake

Sonora taylori

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Nearby counties