Louisiana mammals

Cotton Mouse in Louisiana

Peromyscus gossypinus

Native to Louisiana S5 Secure in Louisiana

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

Cotton Mouse in Louisiana, by the numbers

Occasional in Louisiana 35th most recorded of 72 mammals logged in Louisiana

1,331 occurrence records
5 with iNaturalist photos
Dec 31, 2025 Last seen in Louisiana

Records from 2000–2026.

1,331 total records count every Louisiana occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 1,311 records with a full observation date.

When to look for the Cotton Mouse in Louisiana

Most sightings fall in February to March.

1,311 Louisiana occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Louisiana records (table)
MonthRecords
January110
February205
March212
April84
May21
June79
July44
August86
September23
October97
November198
December152

Monthly cotton mouse occurrence records (iNaturalist and GBIF) in Louisiana, 2000–2026.

Seasonality

Year-round in Louisiana, with recorded sightings peaking in February–March, with a smaller rise in November–December.

Occurrence map

Where Cotton Mouse has been recorded in Louisiana

300 records mapped · zoom and drag to explore

300 Louisiana records mapped

Where it's recorded in Louisiana

CountyRecords
East Baton Rouge County 377
East Feliciana County 116
West Feliciana County 107
Grant County 102
Vernon County 74
Washington County 61
Natchitoches County 55
St. Helena County 43
Acadia County 35
Terrebonne County 28
Tangipahoa County 26
Iberville County 22
42 other counties 285

The complete county distribution, spread across 54 Louisiana counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Cotton mice post by far the largest raw record count of any species in this Louisiana rank tier, 1,331 total, yet all but 5 of them come from GBIF rather than iNaturalist, meaning decades of small-mammal trapping surveys, not casual photographs, built nearly the entire dataset. NatureServe rates the population S5, secure, fitting a species that’s genuinely one of the best-studied rodents in Louisiana’s forests and wetland edges.

Records peak sharply in late winter, February and March together account for 417 of the 1,331 sightings, more than 30 percent of the total, with a deep May trough of just 21; that swing likely tracks when the largest trapping surveys ran rather than any real seasonal explosion in the mouse’s own activity.

Occurrence data from iNaturalist and GBIF.

More mammals in Louisiana 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