House mice aren’t part of Texas’s native wildlife. NatureServe flags the state’s population as exotic, tracking it not as a ranked native species but with the non-applicable SNA designation, and the note attached to that status is blunt: this is a species that arrived with people and now lives wherever grain, shelter, and buildings overlap. Records around Caddo National Grasslands and the Brazos and Trinity river corridors likely trace barns, ranch buildings, and old field edges rather than any natural range within the state.
Reports peak in October and November, the strongest two-month run of the year, which tracks when mice move indoors ahead of colder weather and when trapping around structures typically ramps up. With 973 Texas records, the species ranks common, at the 72nd percentile among the state’s mammals, though that figure reflects how easily this mouse gets noticed near people wherever it lives worldwide, not a measure of a wild, self-sustaining population.
Full species profile
