North Dakota Herp Atlas
Snakes of North Dakota
Common Gartersnake
Thamnophis sirtalis
Plains Gartersnake
Thamnophis radix
Terrestrial Gartersnake
Thamnophis elegans
Racer
Coluber constrictor
Red-bellied Snake
Storeria occipitomaculata
Smooth Greensnake
Opheodrys vernalis
Bullsnake
Pituophis catenifer
Plains Hog-nosed Snake
Heterodon nasicus
Western Milksnake
Lampropeltis gentilis
Prairie Rattlesnake
Crotalus viridis