Know the dangerous ones
Venomous snakes in Bexar County, Texas
9 venomous snake species have verified records in Bexar County. Learn to recognize each one, and know what to do if you are bitten.
Field entries
Micrurus tener Texas CoralsnakeVenomousMicrurus tener
How to identify
Rings of red, yellow, and black where red touches yellow; small rounded head and round pupils.
Often seenFull profile →
Crotalus atrox Western Diamond-backed RattlesnakeVenomousCrotalus atrox
How to identify
Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Often seenFull profile →
Agkistrodon piscivorus Northern CottonmouthVenomousAgkistrodon piscivorus
How to identify
Heavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Often seenFull profile →
Agkistrodon laticinctus Broad-banded CopperheadVenomousAgkistrodon laticinctus
How to identify
Heavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Often seenFull profile →
Crotalus ornatus Eastern Black-tailed RattlesnakeVenomousCrotalus ornatus
How to identify
Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Occasionally seenFull profile →
Agkistrodon contortrix Eastern CopperheadVenomousAgkistrodon contortrix
How to identify
Heavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Rarely seenFull profile →
Micrurus fulvius Eastern CoralsnakeVenomousMicrurus fulvius
How to identify
Rings of red, yellow, and black where red touches yellow; small rounded head and round pupils.
Rarely seenFull profile →
Crotalus viridis Prairie RattlesnakeVenomousCrotalus viridis
How to identify
Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Rarely seenFull profile →
Crotalus molossus Western Black-tailed RattlesnakeVenomousCrotalus molossus
How to identify
Heavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Rarely seenFull profile →
Looking for all snakes here, not just the venomous ones? See all snakes in Bexar County.