Identify The Most Dangerous Snakes In Texas (With Images)

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Common snakes found in the state of Texas

Texas

Copperhead

Agkistrodon contortrix

High Risk

Venomous

50–95 cm (20–37 in)

  • Alabama
  • Arkansas
  • Connecticut
  • Delaware
  • Florida
  • Georgia
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Maryland
  • Massachusetts
  • Mississippi
  • Missouri
  • Nebraska
  • New Jersey
  • New York
  • North Carolina
  • Ohio
  • Oklahoma
  • Pennsylvania
  • South Carolina
  • Tennessee
  • Texas
  • Virginia
  • West Virginia


Cottonmouth

Agkistrodon piscivorus

High Risk

Venomous

65 to 90 cm (26 to 35 in)

  • Alabama
  • Arkansas
  • Florida
  • Georgia
  • Illinois
  • Indiana
  • Kentucky
  • Louisiana
  • Mississippi
  • Missouri
  • North Carolina
  • Oklahoma
  • South Carolina
  • Tennessee
  • Texas
  • Virginia


Western Diamondback Rattlesnake

Crotalus atrox

High Risk

Venomous

120 cm (4 ft)

  • Arizona
  • Arkansas
  • Kansas
  • Nevada
  • New Mexico
  • Oklahoma
  • Texas
  • Utah


Timber Rattlesnake

Crotalus horridus

High Risk

Venomous

 91–152 cm (36–60 in)

  • Alabama
  • Arkansas
  • Connecticut
  • Delaware
  • Florida
  • Georgia
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Maryland
  • Massachusetts
  • Mississippi
  • Missouri
  • New Jersey
  • New York
  • North Carolina
  • Ohio
  • Oklahoma
  • Pennsylvania
  • South Carolina
  • Tennessee
  • Texas
  • Virginia
  • West Virginia
  • Wisconsin 


Rock Rattlesnake

Crotalus lepidus

High Risk

Venomous

 60 – 70 cm (23 – 27 in)

  • Arizona
  • New Mexico
  • Texas


Blacktail Rattlesnake

Crotalus molossus

High Risk

Venomous

76 -107 cm (30 -42 in) 

  • Arizona
  • New Mexico
  • Texas


Mojave Rattlesnake

Crotalus scutulatus

High Risk

Venomous

 100-137 cm (39-54 in)

  • Arizona
  • California
  • Nevada
  • New Mexico
  • Texas
  • Utah


Western Rattlesnake

Crotalus viridis

High Risk

Venomous

50–95 cm (20–37 in)

  • Arizona
  • Colorado
  • Idaho
  • Iowa
  • Kansas
  • Montana
  • Nebraska
  • New Mexico
  • North Dakota
  • Oklahoma
  • South Dakota
  • Texas
  • Wyoming


Pigmy Rattlesnake

Sistrurus miliarius

High Risk

Venomous

40–60 cm (16–24 in)

  • Alabama
  • Arkansas
  • Florida
  • Georgia
  • Kentucky
  • Louisiana
  • Mississippi
  • North Carolina
  • Oklahoma
  • South Carolina
  • Tennessee
  • Texas


Eastern Coral Snake

Micrurus fulvius

Medium Risk

Venomous

50–95 cm (20–37 in)

  • Alabama
  • Arkansas
  • Florida
  • Georgia
  • Louisiana
  • Mississippi
  • North Carolina
  • South Carolina
  • Texas

Glossy Snake

Arizona elegans

Zero Risk

Nonvenomous 

 75–130 cm (30-50 in) 

  • Arizona
  • California
  • Colorado
  • Kansas
  • Nevada
  • New Mexico
  • Oklahoma
  • Texas
  • Utah


Trans-Pecos Rat Snake

Bogertophis subocularis

Low Risk

nonvenomous

90–137 cm (36-54 in)

  • New Mexico
  • Texas


Scarlet Snake

Cemophora coccinea

Low Risk

Nonvenomous

14-26 inches (36–66 cm) 

  • Alabama
  • Arkansas
  • Connecticut
  • Delaware
  • Florida
  • Georgia
  • Illinois
  • Indiana
  • Kentucky
  • Louisiana
  • Maryland
  • Massachusetts
  • Mississippi
  • Missouri
  • New Jersey
  • New York
  • North Carolina
  • Oklahoma
  • Pennsylvania
  • South Carolina
  • Tennessee
  • Texas
  • Virginia
  • West Virginia


Racer

Coluber constrictor

Low Risk

Nonvenomous

50 -152 cm (20 -60 in)

  • All States except Alaska & Hawaii


Black neck Garter Snake

Thamnophis cyrtopsis

Low Risk

Nonvenomous

107 cm (42 in)

  • Arizona
  • California
  • Nevada
  • New Mexico
  • Utah


Ringneck Snake

Diadophis punctatus

Zero Risk

Nonvenomous

25–38 cm (10–15 in)

  • All States except Alaska & Hawaii


Indigo Snake

Drymarchon corais

Low Risk

Nonvenomous

152-213 cm (60-84 in)

  • Alabama
  • Florida
  • Georgia
  • Louisiana
  • Mississippi
  • Texas


Speckled Racer

Drymobius margaritiferus

Low Risk

Nonvenomous

76–102 cm (30–40 in

  • Texas


Baird’s Rat Snake

Pantherophis bairdi

Zero Risk

Nonvenomous

64 – 140 cm (25 – 55 in)

  • Texas


Emory’s Rat Snake

Pantherophis emoryi

Low Risk

Nonvenomous

80 –150 cm (31–59 in)

  • Colorado
  • Missouri
  • Nebraska
  • Texas


Corn Snake

Pantherophis guttatus

Zero Risk

Nonvenomous

 61–182 cm (2.–5.97 ft)

  • Alabama
  • Arkansas
  • Delaware
  • Florida
  • Georgia
  • Kansas
  • Kentucky
  • Louisiana
  • Maryland
  • Massachusetts
  • Mississippi
  • Missouri
  • New Jersey
  • North Carolina
  • Oklahoma
  • South Carolina
  • Tennessee
  • Texas
  • Virginia
  • West Virginia 


Common Rat Snake

Pantherophis obsoletus

Low Risk

Nonvenomous

106 – 183 cm (3 ft 6 in – 6 ft)

  • Arkansas
  • Iowa
  • Kansas
  • Louisiana
  • Missouri
  • Nebraska
  • Oklahoma
  • Texas


Mud Snake

Farancia abacura

Low Risk

Nonvenomous

101.6–137 cm (40–54 in)

  • Alabama
  • Arkansas
  • Florida
  • Georgia
  • Illinois
  • Kentucky
  • Louisiana
  • Mississippi
  • Missouri
  • North Carolina
  • Oklahoma
  • South Carolina
  • Tennessee
  • Texas
  • Virginia


Mexican Hooknose Snake

Ficimia streckeri

Low Risk

Nonvenomous

13 -28 cm (5 – 11 in)

  • Texas


Western Hooknose Snake

Gyalopion canum

Low Risk

Nonvenomous

18-28 cm (7-11 in)

  • Arizona
  • New Mexico
  • Texas


Desert Hooknose Snake

Gyalopion quadrangulare

Low Risk

Nonvenomous

18-28 cm (7-11 in)

  • Arizona
  • New Mexico
  • Texas


Western Hognose Snake

Heterodon nasicus

Low Risk

Nonvenomous

40–50 cm (15–20 in)

  • All States except Alaska & Hawaii


Eastern Hognose Snake

Heterodon platirhinos

Low Risk

Venomous

71 cm (28 in) 

  • Alabama
  • Arkansas
  • Connecticut
  • Delaware
  • Florida
  • Georgia
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Maine
  • Maryland
  • Massachusetts
  • Minnesota
  • Mississippi
  • New Hampshire
  • New Jersey
  • North Carolina
  • Pennsylvania
  • Rhode Island
  • South Carolina
  • Tennessee
  • Texas
  • Virginia
  • West Virginia
  • Wisconsin


Gray-banded Kingsnake

Lampropeltis alterna

Low Risk

Nonvenomous

91 – 120 cm (3-4 ft)

  • Arkansas
  • Colorado
  • Louisiana
  • Montana
  • New Mexico
  • North Dakota
  • Oklahoma
  • South Dakota
  • Texas
  • Utah
  • Wyoming


Common Kingsnake

Lampropeltis getula

Low Risk

Nonvenomous

90– 122 cm (35–48 in)

  • Alabama
  • Arizona
  • Arkansas
  • California
  • Colorado
  • Delaware
  • Florida
  • Georgia
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Maryland
  • Mississippi
  • Missouri
  • Nebraska
  • Nevada
  • NewJersey
  • NewMexico
  • NewYork
  • NorthCarolina
  • Ohio
  • Oklahoma
  • Oregon
  • SouthCarolina
  • Tennessee
  • Texas
  • Utah
  • Virginia
  • WestVirginia

Cat-eyed Snake


Cat-eyed Snake

Leptodeira septentrionalis

Low Risk

Nonvenomous

46 – 61 cm (18–24 in)

  • Texas


Coachwhip

Masticophis flagellum

Low Risk

Nonvenomous

42-60 in (107-152 cm)

  • Alabama
  • Arkansas
  • Arizona
  • California
  • Florida
  • Georgia
  • Louisiana
  • Mississippi
  • New Mexico
  • North Carolina
  • Oklahoma
  • South Carolina
  • Tennessee
  • Texas


Salt Marsh Snake

Nerodia clarkii

Low Risk

Nonvenomous

38–76 cm (15–30 in)

  • Florida
  • Louisiana
  • Mississippi
  • Texas


Mississippi Green Water Snake

Nerodia cyclopion

Low Risk

Nonvenomous

50–95 cm (20–37 in)

  • Alabama
  • Arkansas
  • Florida
  • Illinois
  • Indiana
  • Kentucky
  • Louisiana
  • Mississippi
  • Missouri
  • Tennessee
  • Texas


Southern Water Snake

Nerodia fasciata

Low Risk

Nonvenomous

61–107 cm (24–42 in)

  • Arizona
  • California
  • Florida
  • Georgia
  • North Carolina
  • South Carolina
  • Texas


Florida Green Water Snake

Nerodia floridana

Low Risk

Nonvenomous

76–140 cm (30–55 in)

  • Florida


Brazos Water Snake

Nerodia harteri

Low Risk

Nonvenomous

41–81 cm (16–32 in)

  • Texas


Concho Water Snake

Nerodia paucimaculata

Low Risk

Nonvenomous

41–81 cm (16–32 in)

  • Texas


Diamondback Water Snake

Nerodia rhombifer

Low Risk

Nonvenomous

76–122 cm (30–48 in)

  • Alabama
  • Arkansas
  • Georgia
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Louisiana
  • Mississippi
  • Missouri
  • Oklahoma
  • Tennessee
  • Texas


Northwestern Garter Snake

Thamnophis ordinoides

Low Risk

Nonvenomous

33–97cm (13–38 in)

  • California
  • Oregon


Rough Green Snake

Opheodrys aestivus

Low Risk

Nonvenomous

59–81 cm (22 – 32 in)

  • Alabama
  • Florida
  • Georgia
  • Kentucky
  • Maryland
  • Mississippi
  • North Carolina
  • South Carolina
  • Tennessee
  • Texas
  • Virginia
  • West Virginia


Smooth Green Snake

Opheodrys vernalis

Low Risk

Nonvenomous

36–51 cm (14–20 in)

  • Colorado
  • Illinois
  • Illinois
  • Indiana
  • Iowa
  • Kentucky
  • Michigan
  • Minnesota
  • Missouri
  • New Mexico
  • Ohio
  • Texas
  • Virginia
  • West Virginia
  • Wisconsin
  • Wyoming


Gopher Snake

Pituophis catenifer

Low Risk

Nonvenomous

91–213 cm (36-84 in)

  • Arizona
  • California
  • Idaho
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Missouri
  • Montana
  • Nebraska
  • Nevada
  • New Mexico
  • North Dakota
  • Ohio
  • Oklahoma
  • Oregon
  • South Dakota
  • Texas
  • Utah
  • Washington
  • Wisconsin
  • Wyoming


Graham’s Crayfish Snake

Regina grahamii

Low Risk

Nonvenomous

46–71 cm (18–28 in)

  • Arkansas
  • Illinois
  • Iowa
  • Kansas
  • Louisiana
  • Mississippi
  • Missouri
  • Nebraska
  • Oklahoma
  • Texas


Glossy Crayfish Snake

Regina rigida

Low Risk

Nonvenomous

36–61 cm (14–24 in)

  • Alabama
  • Arkansas
  • Florida
  • Georgia
  • Louisiana
  • Mississippi
  • North Carolina
  • Oklahoma
  • South Carolina
  • Texas
  • Virginia


Longnose Snake

Rhinocheilus lecontei

Low Risk

Nonvenomous

56–81 cm (22–32 in)

  • Arizona
  • California
  • Colorado
  • Idaho
  • Kansas
  • Nevada
  • New Mexico
  • Oklahoma
  • Texas
  • Utah


Big Bend Patchnose Snake

Salvadora deserticola

Low Risk

Nonvenomous

50–101 cm (20–40 in)

  • Arizona
  • New Mexico
  • Texas


Mountain Patchnose Snake

Salvadora grahamiae

Low Risk

Nonvenomous

55–119 cm (22–47 in)

  • New Mexico
  • Texas


Western Patchnose Snake

Salvadora hexalepis

Low Risk

Nonvenomous

51–117 cm (20–46 in)

  • Arizona
  • California
  • Nevada
  • New Mexico
  • Texas


Ground Snake

Sonora semiannulata

Low Risk

Nonvenomous

20–48 cm (8–19 in)

  • Arizona
  • Nevada
  • California
  • Colorado
  • Kansas
  • Missouri
  • New Mexico
  • Oklahoma
  • Oregon
  • Texas
  • Utah


Redbelly Snake

Storeria occipitomaculata

Low Risk

Nonvenomous

4–10 cm (10–25 in)

  • All States except Alaska & Hawaii


Mexican Blackhead Snake

Tantilla atriceps

Low Risk

Nonvenomous

20 cm (8 in) 

  • Texas


Flathead Snake

Tantilla gracilis

Low Risk

Nonvenomous

18–20 cm (7–8 in)

  • Arkansas
  • Illinois
  • Kansas
  • Louisiana
  • Missouri
  • Oklahoma
  • Texas


Southwestern Blackhead Snake

Tantilla hobartsmithi

Low Risk

Nonvenomous

20–38 cm (8–15 in)

  • Arizona
  • California
  • Colorado
  • Nevada
  • New Mexico
  • Texas
  • Utah


Plains Blackhead Snake

Tantilla nigriceps

Low Risk

Nonvenomous

18–38 cm (7–15 in)

  • Arizona
  • Colorado
  • Kansas
  • Nebraska
  • New Mexico
  • Oklahoma
  • Texas


Big Bend Blackhead Snake

Tantilla rubra

Low Risk

Nonvenomous

30 cm (11 in)

  • Arizona
  • California
  • Nevada
  • New Mexico
  • Texas


Yaqui Blackhead Snake

Tantilla yaquia

Low Risk

Nonvenomous

18–38 cm (7–15 in)

  • Arizona
  • Colorado
  • Kansas
  • Nebraska
  • New Mexico
  • Oklahoma
  • Texas


Checkered Garter Snake

Thamnophis marcianus

Low Risk

Nonvenomous

46–61 cm (8–24 in)

  • Arizona
  • California
  • Colorado
  • Nevada
  • New Mexico
  • Oklahoma
  • Texas
  • Utah


Plains Garter Snake

Thamnophis radix

Low Risk

Nonvenomous

38–71 cm (15–28 in)

  • Alabama
  • Arkansas
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Michigan
  • Minnesota
  • Mississippi
  • Missouri
  • Nebraska
  • North Dakota
  • Ohio
  • Oklahoma
  • South Dakota
  • Tennessee
  • Texas
  • West Virginia
  • Wisconsin


Common Garter Snake

Thamnophis sirtalis

Low Risk

Nonvenomous

55–137 cm (22–54 in)

  • All States except Alaska & Hawaii


Lined Snake

Tropidoclonion lineatum

Low Risk

Nonvenomous

50–95 cm (20–37 in)

  • Alabama
  • Arkansas
  • Illinois
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Mississippi
  • Missouri
  • Nebraska
  • Oklahoma
  • Tennessee
  • Texas


Rough Earth Snake

Virginia striatula

Low Risk

Nonvenomous

18–25 cm (7–10 in)

  • Alabama
  • Arkansas
  • Florida
  • Georgia
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Mississippi
  • Missouri
  • North Carolina
  • Oklahoma
  • South Carolina
  • Tennessee
  • Texas
  • Virginia
  • West Virginia


Smooth Earth Snake

Virginia valeriae

Low Risk

Nonvenomous

18–25 cm (7–10 in)

  • Alabama
  • Arkansas
  • Delaware
  • Florida
  • Georgia
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Maryland
  • Mississippi
  • Missouri
  • Nebraska
  • New Jersey
  • North Carolina
  • Ohio
  • Oklahoma
  • Pennsylvania
  • South Carolina
  • Tennessee
  • Texas
  • Virginia
  • West Virginia

Texas Blind Snake

Texas Blind Snake

Leptotyphlops dulcis

Zero risk

nonvenomous 

27 cm (11 in)

  • Texas


Western Blind Snake

Leptotyphlops humilis

Zero risk

nonvenomous 

30 cm (12 in)

  • Arizona
  • California
  • Colorado
  • Nevada
  • New Mexico
  • Oklahoma
  • Texas
  • Utah

For a full list of every venomous and nonvenomous snake found in the USA, check out my full article: Identity 130+ Snake Species From The USA (With Images)