Texas
Snakes in Navarro County
19 species have been documented here, 4 of them venomous.
Venomous snakes in Navarro County
Full guide & what to do if bitten →
Northern CottonmouthAgkistrodon piscivorusVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Western Black-tailed RattlesnakeCrotalus molossusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Timber RattlesnakeCrotalus horridusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Navarro County
Diamondback Watersnake
Nerodia rhombifer
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Northern Cottonmouth
Agkistrodon piscivorus
Venomous
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Banded Watersnake
Nerodia fasciata
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
North American Racer
Coluber constrictor
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Common Coachwhip
Masticophis flagellum
Harmless
Graham's Crawfish Snake
Regina grahamii
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Western Black-tailed Rattlesnake
Crotalus molossus
Venomous
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Rough Greensnake
Opheodrys aestivus
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Mudsnake
Farancia abacura
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.