Snake Key
Some or all dorsal scales keeled
Kirtland's Snake
Elaphe guttata
Corn Snake
Elaphe obsoleta
Rat Snake
Elaphe vulpina
Fox Snake
Farancia abacura
Mud Snake
Heterodon nasicus
Western Hognose Snake
Heterodon platirhinos
Eastern Hognose Snake
Nerodia cyclopion
Mississippi Green Water Snake
Nerodia erythrogaster
Plainbelly Water Snake
Nerodia fasciata
Southern Water Snake
Nerodia rhombifer
Diamondback Water Snake
Nerodia sipedon
Northern Water Snake
Opheodrys aestivus
Rough Green Snake
Regina grahamii
Graham's Crayfish Snake
Regina septemvittata
Queen Snake
Storeria dekayi
Brown Snake
Storeria occipitomaculata
Redbelly Snake
Virginia valeriae
Smooth Earth Snake
Bull Snake
Thamnophis proximus
Western Ribbon Snake
Thamnophis radix
Plains Garter Snake
Thamnophis sauritus
Eastern Ribbon Snake
Thamnophis sirtalis
Common Garter Snake
Tropidoclonion lineatum
Lined Snake
Virginia valeriae
Smooth Earth Snake
Worm Snake
Coluber constrictor
Racer
Diadophis punctatus
Ringneck Snake
Farancia abacura
Mud Snake
Masticophis flagellum
Coachwhip
Opheodrys vernalis
Smooth Green Snake
Tantilla gracilis
Flathead Snake
Virginia valeriae
Smooth Earth Snake
Scarlet Snake
Lampropeltis calligaster
Prairie Kingsnake
Lampropeltis getula
Common Kingsnake
Lampropeltis triangulum
Milk Snake