Assertion: prairie dog's range | /r/HasProperty | historic
Facets:
Source sentences:
text: As of 2007, black-tailed prairie dogs occur across most of their historic range, excluding Arizona; however, their occupied acreage and populations are well below historic levels.
text: However, by the early 1970s, the Utah prairie dog had been eliminated from major portions of its historical range and had declined to an estimated 3,300 individuals distributed among 37 Utah prairie dog colonies.