Michigan has only 19 least weasel records, scattered one to three per county across 12 counties of the southern Lower Peninsula, from Kent and Allegan in the west to Washtenaw, Oakland, and St. Clair in the east. As the smallest carnivore in North America, small enough to follow rodents into their own burrows, it’s rarely seen even where present, and 16 of the 19 records are iNaturalist sightings.
With no month holding more than three records, there’s no seasonal rhythm to read; March and December hold three apiece, the most of any month, and that likely reflects chance encounters more than a true activity pattern. NatureServe ranks the species S5, Secure, statewide despite how seldom it turns up in the record.
Full species profile
