North Dakota Herp Atlas
Salamanders of Williams County, North Dakota
Western Tiger Salamander
Ambystoma mavortium
Last recorded in 2014
Frogs and Toads of Williams County, North Dakota
Woodhouse's Toad
Anaxyrus woodhousii
Last recorded in 2013
Plains Spadefoot
Spea bombifrons
Last recorded in 1921
Boreal Chorus Frog
Pseudacris maculata
Last recorded in 1921
Northern Leopard Frog
Lithobates pipiens
Last recorded in 1975
Snakes of Williams County, North Dakota
Common Gartersnake
Thamnophis sirtalis
Last recorded in 1975
Plains Gartersnake
Thamnophis radix
Last recorded in 1970
Smooth Greensnake
Opheodrys vernalis
Last recorded in 2013
Bullsnake
Pituophis catenifer
Last recorded in 2011
Prairie Rattlesnake
Crotalus viridis
Last recorded in 2010