Texas
Snakes in Knox County
14 species have been documented here, 2 of them venomous.
Venomous snakes in Knox County
Full guide & what to do if bitten →
Western Diamond-backed RattlesnakeCrotalus atroxVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Western MassasaugaSistrurus tergeminusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Every snake recorded in Knox County
Checkered Garter Snake
Thamnophis marcianus
Harmless
Great Plains Ratsnake
Pantherophis emoryi
Harmless
Texas Blind Snake
Rena dulcis
Harmless
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Common Coachwhip
Masticophis flagellum
Harmless
North American Racer
Coluber constrictor
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Diamondback Watersnake
Nerodia rhombifer
Harmless
Long-nosed Snake
Rhinocheilus lecontei
Harmless
Western Massasauga
Sistrurus tergeminus
Venomous
Western Ratsnake
Pantherophis obsoletus
Harmless
Glossy Snake
Arizona elegans
Harmless
Pine Snake
Pituophis melanoleucus
Harmless
Plains Black-headed Snake
Tantilla nigriceps
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Knox County: FAQ
- Are there venomous snakes in Knox County, Texas?
- Yes. 2 venomous snake species have verified records in Knox County, Texas, including Western Diamond-backed Rattlesnake, Western Massasauga. Most snakes in Knox County, Texas, however, are harmless.
- How many snake species live in Knox County, Texas?
- 10+ snake species have verified records in Knox County, Texas, of which 2 are venomous.
- What is the most commonly seen snake in Knox County, Texas?
- The Checkered Garter Snake is the most frequently reported snake in Knox County, Texas, based on verified wildlife observations.
- What should I do if I see a venomous snake in Knox 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.