Arkansas mammals

North American River Otter in Arkansas

Lontra canadensis

Native to Arkansas S5 Secure in Arkansas

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

North American River Otter in Arkansas, by the numbers

Occasional in Arkansas 27th most recorded of 78 mammals logged in Arkansas

88 occurrence records
81 with iNaturalist photos
Jun 21, 2026 Last seen in Arkansas

Records from 2000–2026.

88 total records count every Arkansas occurrence from GBIF and iNaturalist; the monthly chart covers the 87 records with a full observation date.

When to look for the North American River Otter in Arkansas

Most sightings fall in February.

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

Monthly Arkansas records (table)
MonthRecords
January7
February13
March7
April4
May4
June8
July7
August8
September6
October10
November5
December8

Monthly north american river otter occurrence records (iNaturalist and GBIF) in Arkansas, 2000–2026.

Seasonality

Year-round in Arkansas, with recorded sightings peaking in February, with a smaller rise in June and August.

Occurrence map

Where North American River Otter has been recorded in Arkansas

88 records mapped · zoom and drag to explore

88 Arkansas records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Buffalo National River 8
Ozark National Forest 3
Cane Creek State Park 1
Moro Bay State Park 1
Sulphur River 1
Choctaw Island 1
Logoly State Park 1
Sylamore Wildlife Management Area 1

Protected places with the most north american river otter 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 Arkansas

CountyRecords
Benton County 14
Stone County 6
Monroe County 6
Marion County 5
Pulaski County 5
Johnson County 5
Washington County 4
Baxter County 4
Sebastian County 4
Craighead County 4
Searcy County 3
Arkansas County 2
23 other counties 26

The complete county distribution, spread across 35 Arkansas counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

The river otter’s Arkansas record, 88 records spread across 35 counties, follows water from one end of the state to the other: the clear runs of the Buffalo National River and the streams of Ozark National Forest in the north, and the slow bayous around Felsenthal National Wildlife Refuge and Moro Bay State Park in the southern lowlands.

A fish chaser with a playful streak

Otters live on fish, crayfish, frogs, and anything else they can outswim, hunting by sight and whisker-touch underwater. They are famously active animals, and the mudslides they wear into riverbanks, along with the latrines where a family group leaves scat, are often the surest sign that otters are working a stretch of water. At Buffalo National River, where the record is thickest, gravel bars at first light are the place to look.

At home in the cold

Otters do not hibernate and stay active under ice if need be, so Arkansas’s mild winters keep them on the move year-round. Records fall in every month, with a small February crest, when leafless woods make a swimming otter easier to spot, and a second rise in October as family groups travel along the rivers.

Status in Arkansas

NatureServe ranks the river otter S5, Secure, and the species is native to Arkansas. USGS NAS does not list it as nonindigenous in the state.

Occurrence data from iNaturalist and GBIF.

North American River Otter in other states

View all states →

More mammals in Arkansas 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"