Snakes in Duval 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.

Every snake recorded in Duval County

Western Diamond-backed Rattlesnake

Crotalus atrox

▲ Venomous

Gopher Snake

Pituophis catenifer

Harmless

Tantilla selmae

Harmless

Flat-headed Snake

Tantilla gracilis

Harmless

No photo

Mexican Whip Snake

Masticophis lineatus

Harmless

Great Plains Ratsnake

Pantherophis emoryi

Harmless

Checkered Garter Snake

Thamnophis marcianus

Harmless

Central American Indigo Snake

Drymarchon melanurus

Harmless

Glossy Snake

Arizona elegans

Harmless

Tamaulipan Milksnake

Lampropeltis annulata

Harmless

Tamaulipan Hook-nosed Snake

Ficimia streckeri

Harmless

Texas Coralsnake

Micrurus tener

▲ Venomous

Long-nosed Snake

Rhinocheilus lecontei

Harmless

Schott's Whipsnake

Masticophis schotti

Harmless

Common Coachwhip

Masticophis flagellum

Harmless

Eastern Milksnake

Lampropeltis triangulum

Harmless

Plains Black-headed Snake

Tantilla nigriceps

Harmless

Red Cornsnake

Pantherophis guttatus

Harmless

Striped Whipsnake

Masticophis taeniatus

Harmless

Chihuahuan Nightsnake

Hypsiglena jani

Harmless

Desert Kingsnake

Lampropeltis splendida

Harmless

Ground Snake

Sonora semiannulata

Harmless

Mexican Hognose Snake

Heterodon kennerlyi

Harmless

Rough Greensnake

Opheodrys aestivus

Harmless

Western Ribbon Snake

Thamnophis proximus

Harmless

Eastern Hognose Snake

Heterodon platirhinos

Harmless

Eastern Kingsnake

Lampropeltis getula

Harmless

Texas Patch-nosed Snake

Salvadora lineata

Harmless

Yellow-tailed Indigo Snake

Drymarchon corais

Harmless

Taylor’s Ground Snake

Sonora taylori

Harmless

Western Ratsnake

Pantherophis obsoletus

Harmless

Texas Blind Snake

Rena dulcis

Harmless

Plains Hognose Snake

Heterodon nasicus

Harmless

Sinaloan Nightsnake

Hypsiglena torquata

Harmless

Compiled from verified GBIF & iNaturalist observations. Informational only.

Nearby counties