California mammals

Cactus Deermouse in California

Peromyscus eremicus

Native to California SNR Unranked in California

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

Cactus Deermouse in California, by the numbers

Occasional in California 84th most recorded of 241 mammals logged in California

4,369 occurrence records
41 with iNaturalist photos

Records from 2000–2026.

4,369 total records count every California occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 4,286 records with a full observation date.

When to look for the Cactus Deermouse in California

Most sightings fall in March to April.

4,286 California occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly California records (table)
MonthRecords
January346
February247
March563
April716
May302
June332
July121
August252
September300
October410
November336
December361

Monthly cactus deermouse occurrence records (iNaturalist and GBIF) in California, 2000–2026.

Seasonality

Year-round in California, with recorded sightings peaking in March–April.

Occurrence map

Where Cactus Deermouse has been recorded in California

300 records mapped · zoom and drag to explore

300 California records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Death Valley National Park 259
Joshua Tree National Park 118
Santa Rosa And San Jacinto National Monument 101
Mojave National Preserve 98
Mojave Trails National Monument 78
Inyo Mountains Wilderness Area 34
Kiavah Wilderness Area 21
San Felipe Valley Wildlife Area 13

Protected places with the most cactus deermouse 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 California

CountyRecords
Riverside County 1,133
San Diego County 1,022
San Bernardino County 941
Inyo County 477
Imperial County 357
Los Angeles County 185
Kern County 124
Orange County 24
Ventura County 21
Santa Cruz County 21
Santa Barbara County 3
Madera County 3
2 other counties 58

The complete county distribution, spread across 14 California counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Cactus Deermouse records in California fit dry scrub, rocky canyons, and sandy or gravelly ground.

Reports center on the Mojave and Colorado deserts, including Death Valley and the Joshua Tree region. They show where people have documented the species, and they don’t rank California’s best habitat.

Reports rise most clearly in Apr, Sep–Oct. That pattern can reflect animal movements, weather, and observer effort, so it isn’t a population count.

Occurrence data from iNaturalist and GBIF.

More mammals in California 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"