Texas mammals

Northern Rock Mouse in Texas

Peromyscus nasutus

Native to Texas S4 Apparently Secure in Texas

Not listed as nonindigenous in Texas by USGS NAS; native to its Texas range.

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

Northern rock mouse peering out from cover with large ears and long whiskersNorthern rock mouse climbing a lichen-covered branch against bare rock
Photo: Juan Cruzado Cortés · CC BY-SA 4.0Northern rock mouse peering out from cover with large ears and long whiskersPhoto: Juan Cruzado Cortés · CC BY-SA 4.0Northern rock mouse climbing a lichen-covered branch against bare rock

Northern Rock Mouse in Texas, by the numbers

Rare in Texas 157th most recorded of 197 mammals logged in Texas

3 occurrence records

Records from 2000–2026.

When to look for the Northern Rock Mouse in Texas

Most sightings fall in May.

3 Texas occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence. Based on a small number of dated records; the seasonal pattern may not be representative.

Monthly Texas records (table)
MonthRecords
January0
February0
March0
April0
May3
June0
July0
August0
September0
October0
November0
December0

Monthly northern rock mouse occurrence records (iNaturalist and GBIF) in Texas, 2000–2026.

Seasonality

Sparse observation record in Texas; presence confirmed but timing of activity not well documented.

Occurrence map

Where Northern Rock Mouse has been recorded in Texas

3 records mapped · zoom and drag to explore

3 Texas records mapped

Where it's recorded in Texas

CountyRecords
Jeff Davis County 3

The complete county distribution, spread across 1 Texas counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

The northern rock mouse is a rock-crevice specialist restricted in Texas to the rugged canyons and boulder fields of the Trans-Pecos, and its only Texas records from 2000 to 2026 come from Jeff Davis County, in the Davis Mountains.

The 3 records all come from GBIF rather than iNaturalist photos, consistent with a small, purely nocturnal mouse that shelters in rock piles and is rarely seen or photographed casually, and all three fall in May, far too few to describe any seasonal cycle.

NatureServe still ranks the species S4, Apparently Secure, in Texas despite the thin record count, reflecting its known Trans-Pecos range rather than how often it’s been documented there.

Occurrence data from GBIF.

Northern rock mouse peering out from cover with large ears and long whiskers
Full species profile Northern Rock Mouse Peromyscus nasutus Size 10.2 cm4 in Weight 28 g1 oz Lifespan Up to 5.4 yr View the full profile

More mammals in Texas in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries