Tennessee mammals

Hispid cotton rat in Tennessee

Sigmodon hispidus

Native to Tennessee S5 Secure in Tennessee

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

Hispid cotton rat in Tennessee, by the numbers

Common in Tennessee 9th most recorded of 86 mammals logged in Tennessee

1,663 occurrence records
147 with iNaturalist photos
Jul 11, 2026 Last seen in Tennessee

Records from 2000–2026.

1,663 total records count every Tennessee occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 1,636 records with a full observation date.

When to look for the Hispid cotton rat in Tennessee

Most sightings fall in October to November.

1,636 Tennessee occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly Tennessee records (table)
MonthRecords
January51
February95
March208
April187
May176
June133
July176
August40
September74
October155
November241
December100

Monthly hispid cotton rat occurrence records (iNaturalist and GBIF) in Tennessee, 2000–2026.

Seasonality

Year-round in Tennessee, with recorded sightings peaking in October–November, with a smaller rise in March–May and July.

Occurrence map

Where Hispid cotton rat has been recorded in Tennessee

300 records mapped · zoom and drag to explore

300 Tennessee records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Three Bend Scenic & Wildlife Refuge 117
Seven Islands 12
Great Smoky Mountains National Park 8
Wolf River Wildlife Management Area Unit 1 7
Kyker Bottoms Wildlife Management Area 6
Cherokee National Forest 3
Oak Ridge Wildlife Management Area 2
Fort Loudon 1

Protected places with the most hispid cotton rat 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 Tennessee

CountyRecords
Gibson County 610
Fayette County 349
Knox County 155
Shelby County 117
Marion County 84
Hamilton County 81
Carroll County 27
Roane County 27
Campbell County 20
Anderson County 19
Blount County 17
Hardeman County 17
41 other counties 140

The complete county distribution, spread across 53 Tennessee counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Hatchie National Wildlife Refuge anchors the named Tennessee records for hispid cotton rats, pointing toward thick grass and weedy cover in the state’s western river country. Records also reach the Valley and Ridge, Middle Tennessee basin, and Cumberland Plateau. Around the Smokies and Cherokee National Forest, suitable ground is more likely in openings and field edges than beneath closed forest.

Reports rise from March through May and again in November, with March the strongest month. That split pattern may reflect when small-mammal surveys were run as much as the rats themselves. It shows recorded timing, not a statewide population cycle.

Occurrence data from iNaturalist and GBIF.

More mammals in Tennessee 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"