Kansas
Snakes in Lyon County
24 species have been documented here, 3 of them venomous.
Venomous snakes in Lyon County
Full guide & what to do if bitten →
Eastern CopperheadAgkistrodon contortrixVenomousHeavy body, triangular head, vertical pupils, and a heat-sensing pit between each eye and nostril.
Western MassasaugaSistrurus tergeminusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Western Diamond-backed RattlesnakeCrotalus atroxVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Lyon County
Ring-necked Snake
Diadophis punctatus
Harmless
North American Racer
Coluber constrictor
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Plains Garter Snake
Thamnophis radix
Harmless
Western Ratsnake
Pantherophis obsoletus
Harmless
Eastern Copperhead
Agkistrodon contortrix
Venomous
Diamondback Watersnake
Nerodia rhombifer
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Lined Snake
Tropidoclonion lineatum
Harmless
Graham's Crawfish Snake
Regina grahamii
Harmless
Speckled Kingsnake
Lampropeltis holbrooki
Harmless
Western Massasauga
Sistrurus tergeminus
Venomous
Plain-bellied Watersnake
Nerodia erythrogaster
Harmless
Western Ribbon Snake
Thamnophis proximus
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Western Diamond-backed Rattlesnake
Crotalus atrox
Venomous
Prairie Kingsnake
Lampropeltis calligaster
Harmless
Flat-headed Snake
Tantilla gracilis
Harmless
Western Worm Snake
Carphophis vermis
Harmless
Tantilla selmae
Harmless
Great Plains Ratsnake
Pantherophis emoryi
Harmless
Red Cornsnake
Pantherophis guttatus
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.