Texas mammals

Chihuahuan Grasshopper Mouse in Texas

Onychomys arenicola

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.

Chihuahuan Grasshopper Mouse in Texas, by the numbers

Occasional in Texas 120th most recorded of 197 mammals logged in Texas

85 occurrence records
3 with iNaturalist photos
Aug 4, 2021 Last seen in Texas

Records from 2000–2026.

When to look for the Chihuahuan Grasshopper Mouse in Texas

Most sightings fall in November.

85 Texas occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Texas records (table)
MonthRecords
January11
February7
March11
April7
May4
June5
July8
August3
September1
October7
November17
December4

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

Seasonality

Year-round in Texas, with recorded sightings peaking in November, with a smaller rise in January and March.

Occurrence map

Where Chihuahuan Grasshopper Mouse has been recorded in Texas

85 records mapped · zoom and drag to explore

85 Texas records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Elephant Mountain Wildlife Management Area 12
Christmas Mountains Ranch 2

Protected places with the most chihuahuan grasshopper mouse sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in Texas

CountyRecords
Brewster County 35
Presidio County 13
Hudspeth County 10
El Paso County 9
Reeves County 7
Culberson County 4
Jim Wells County 2
Ward County 1
Crockett County 1
Pecos County 1
Loving County 1
Andrews County 1

The complete county distribution, spread across 12 Texas counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Grasshopper mice are unusual among rodents: despite the name, they’re mostly predators, hunting insects, scorpions, and even other mice, and they’re known for standing on their hind legs and giving a high thin howl to mark territory. Texas’s Chihuahuan grasshopper mouse records concentrate around Big Bend and the Guadalupe and Davis Mountains, the Chihuahuan desert and grassland this species needs.

The 85 Texas records show a November peak, 17 reports against single digits most other months, though the most recent record dates to August 2021, so current activity in the state is harder to confirm than the historical pattern. NatureServe ranks the species S4, Apparently Secure, in Texas, comfortable but not the top tier.

Only 3 of the 85 records come from iNaturalist, so almost everything known about this species in Texas still comes from specimen collections and targeted small-mammal surveys rather than casual sightings.

Occurrence data from iNaturalist and GBIF.

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
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"