Venomous animals in Texas
The ones that need the most respect: western diamondback rattlesnake, cottonmouth, prairie rattlesnake, timber rattlesnake. A bite from any of them is a medical emergency.
- 8 dangerous
- 5 medically significant
- 5 painful, rarely serious
Where they turn up in Texas
- None recorded
- 1 species
- 2
- 3 to 4
- 5 or more
Venomous snakes in Texas
Western diamondback rattlesnakeDangerous4,500 records, 167 counties
CottonmouthDangerous1,790 records, 116 counties
Prairie rattlesnakeDangerous677 records, 81 counties
Timber rattlesnakeDangerous278 records, 50 counties
Mojave rattlesnakeDangerous579 records, 9 counties
Black-tailed rattlesnakeDangerous768 records, 25 counties
Rock rattlesnakeDangerous614 records, 15 counties
Texas coral snakeDangerous896 records, 97 counties
CopperheadMedically significant3,139 records, 138 counties
Pygmy rattlesnakeMedically significant271 records, 34 counties
Western massasaugaMedically significant228 records, 32 counties
Venomous snakes in Texas: map, photos and look-alikes
Venomous spiders in Texas
Black widowMedically significant441 records, 96 counties
Brown recluseMedically significant130 records, 44 counties
TarantulaPainful, rarely serious557 records, 76 counties
Brown widowPainful, rarely serious102 records, 21 counties
Venomous spiders in Texas: map, photos and look-alikes
Scorpions in Texas
Scorpions in Texas: map, photos and look-alikes
Centipedes in Texas
Tiger centipedePainful, rarely serious23 records, 10 counties
Giant desert centipedePainful, rarely serious165 records, 43 counties
Centipedes in Texas: map, photos and look-alikes
When they are out
- Venomous snakes
- Venomous spiders
- Scorpions
- Centipedes
Recorded, but not living here
- Rare records Eastern diamondback rattlesnake 4 open records
- Rare records Ridge-nosed rattlesnake 1 open record
- Rare records Gila monster 3 open records
- Rare records Sonoran coral snake 1 open record
- Rare records Arizona bark scorpion 1 open record, latest 2020
A rare record means someone found or reported the animal once or a few times, but there is no known population. Many are strays, pets or hitchhikers in cargo.
Harmless look-alikes in Texas
- Brown Recluse vs Wolf Spider Wolf spider is harmless
- Cottonmouth vs Water Snake Water snake is harmless
- Copperhead vs Northern Water Snake Northern water snake is harmless
- Cottonmouth vs Banded Water Snake Banded water snake is harmless
- Copperhead vs Corn Snake Corn snake is harmless
- Copperhead vs Rat Snake Rat snake is harmless
- Brown Recluse vs Cellar Spider Cellar spider is harmless
- Copperhead vs Milk Snake Milk snake is harmless
- Brown Recluse vs Southern House Spider Southern house spider is harmless
- Cottonmouth vs Diamondback Water Snake Diamondback water snake is harmless
- Pygmy Rattlesnake vs Hognose Snake Eastern hognose snake is harmless
- Copperhead vs Hognose Snake Eastern hognose snake is harmless
Quick answers for Texas
- Lives here Rattlesnakes
- Lives here Copperheads
- Lives here Cottonmouths
- Lives here Coral snakes
- Lives here Brown recluses
- Lives here Black widows
- Lives here Tarantulas
- Rare records Gila monsters
Questions
How many venomous snakes live in Texas?
11 species: Western diamondback rattlesnake, Cottonmouth, Prairie rattlesnake, Timber rattlesnake, Mojave rattlesnake, Black-tailed rattlesnake, Rock rattlesnake, Texas coral snake, Copperhead, Pygmy rattlesnake and Western massasauga.
Are there brown recluse spiders in Texas?
Yes. The brown recluse lives in Texas. Open records come from 44 counties.
Are there scorpions in Texas?
Yes: Striped bark scorpion.
When are venomous animals most active in Texas?
Most open records from Texas fall in April to July, September. Records follow when people are outdoors too, so treat this as a guide, not a rule.
What should I do after a bite or sting?
Call 911 for any venomous snakebite or a severe reaction. For spider bites and scorpion stings, call Poison Control at 1-800-222-1222, free and open 24/7.
