Nearly all of Texas’s Mexican spiny pocket mouse records come from the thornscrub and resaca country around Laguna Atascosa National Wildlife Refuge and the Lower Rio Grande Valley, the northern edge of a range that’s mostly in Mexico. Chaparral Wildlife Management Area extends that thread further into South Texas brushland.
August accounts for well over half of the state’s 203 records, a spike so lopsided it likely reflects one concentrated trapping survey rather than a true late-summer surge in activity. NatureServe ranks the species S3, Vulnerable, in Texas specifically, a narrower and more concerning read than its globally secure IUCN status suggests. With records ranked rare among Texas mammals, sightings stay thin outside the Valley.
