Wyoming marks the northern fringe of the hispid pocket mouse’s range, but the state’s file holds no records from 2000 to 2026. Older records, nearly all from Platte, Laramie, and Goshen counties in the southeastern corner along the Nebraska line, are what place it here.
That southeast corner is the right kind of country: dry, open grassland on sandy, easy-to-dig soil. But that older concentration also mirrors where survey effort focused, and with no recent records at all, no corner of Wyoming can be called proven or empty with much confidence. NatureServe ranks the mouse imperiled in the state, which makes any new confirmed report genuinely valuable.
June through August are the months when these mice are most active above ground and small-mammal crews are in the field, so that’s when a new record would most likely come. One from the southeast would confirm the species is still there; one from any other county would be news.
Full species profile
