I was perusing Vernon Bailey’s Mammals of North Dakota from 1926 recently. He recognized two species of porcupines in the state. He went on to note that the yellow-haired, or Rocky Mountain porcupine was mainly found west of the Missouri River and that a specimen collected in 1914 in the Turtle Mountains was the easternmost documentation of the species. The black-haired or Canada porcupine was an eastern species with a couple records in the eastern part of the state along the Red River and in