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Nearby · Hamilton Co.
Muskrat (Ondatra zibethicus)
(c) earnoodles, some rights reserved (CC BY-NC), uploaded by earnoodles · CC BY-NC 4.0 (opens in a new tab) · iNaturalist (opens in a new tab)
MammalsIn Hamilton County, Ohio

Muskrat

Ondatra zibethicus (Linnaeus, 1766)

Muskrat in all of Ohio
Kingdom
Animalia
Phylum
Chordata
Class
Mammalia
Order
Rodentia
Family
Cricetidae
Genus
Ondatra
Near Hamilton County

Range

Where it is recorded

Season shown in 0 of Ohio's 88 counties. Its mapped range covers 88. Explore Ohio

  • No result yet (0)
  • Within its mapped range (18)
  • Recorded, too few records for a result (59)
  • Recorded, season not shown (11)
  • Season shown (0)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Range: USGS Gap Analysis Project, Species Range Maps CONUS_2001 (2018). Show as a table
Counties as a table
Muskrat by Ohio county: records and mapped range
CountyRecordsIn mapped range
Adams CountyNo qualifying records yetYes: year-round
Allen CountyRecorded, too few records for a resultYes: year-round
Ashland CountyRecorded, too few records for a resultYes: year-round
Ashtabula CountyRecorded, too few records for a resultYes: year-round
Athens CountyRecorded, too few records for a resultYes: year-round
Auglaize CountyRecorded, too few records for a resultYes: year-round
Belmont CountyNo qualifying records yetYes: year-round
Brown CountyRecorded, too few records for a resultYes: year-round
Butler CountyRecorded, too few records for a resultYes: year-round
Carroll CountyRecorded, too few records for a resultYes: year-round
Champaign CountyRecorded, too few records for a resultYes: year-round
Clark CountyRecorded, too few records for a resultYes: year-round
Clermont CountyRecorded, too few records for a resultYes: year-round
Clinton CountyRecorded, too few records for a resultYes: year-round
Columbiana CountyRecorded, too few records for a resultYes: year-round
Coshocton CountyRecorded, too few records for a resultYes: year-round
Crawford CountyNo qualifying records yetYes: year-round
Cuyahoga County51 · Recorded, season not shownYes: year-round
Darke CountyRecorded, too few records for a resultYes: year-round
Defiance CountyRecorded, too few records for a resultYes: year-round
Delaware CountyRecorded, too few records for a resultYes: year-round
Erie County45 · Recorded, season not shownYes: year-round
Fairfield CountyNo qualifying records yetYes: year-round
Fayette CountyRecorded, too few records for a resultYes: year-round
Franklin County58 · Recorded, season not shownYes: year-round
Fulton CountyRecorded, too few records for a resultYes: year-round
Gallia CountyNo qualifying records yetYes: year-round
Geauga CountyRecorded, too few records for a resultYes: year-round
Greene County26 · Recorded, season not shownYes: year-round
Guernsey CountyRecorded, too few records for a resultYes: year-round
Hamilton County35 · Recorded, season not shownYes: year-round
Hancock CountyRecorded, too few records for a resultYes: year-round
Hardin CountyRecorded, too few records for a resultYes: year-round
Harrison CountyRecorded, too few records for a resultYes: year-round
Henry CountyRecorded, too few records for a resultYes: year-round
Highland CountyNo qualifying records yetYes: year-round
Hocking CountyRecorded, too few records for a resultYes: year-round
Holmes CountyRecorded, too few records for a resultYes: year-round
Huron CountyNo qualifying records yetYes: year-round
Jackson CountyRecorded, too few records for a resultYes: year-round
Jefferson CountyRecorded, too few records for a resultYes: year-round
Knox CountyRecorded, too few records for a resultYes: year-round
Lake County31 · Recorded, season not shownYes: year-round
Lawrence CountyRecorded, too few records for a resultYes: year-round
Licking CountyRecorded, too few records for a resultYes: year-round
Logan CountyRecorded, too few records for a resultYes: year-round
Lorain County35 · Recorded, season not shownYes: year-round
Lucas County120 · Recorded, season not shownYes: year-round
Madison CountyRecorded, too few records for a resultYes: year-round
Mahoning CountyRecorded, too few records for a resultYes: year-round
Marion CountyRecorded, too few records for a resultYes: year-round
Medina CountyRecorded, too few records for a resultYes: year-round
Meigs CountyRecorded, too few records for a resultYes: year-round
Mercer CountyRecorded, too few records for a resultYes: year-round
Miami CountyRecorded, too few records for a resultYes: year-round
Monroe CountyNo qualifying records yetYes: year-round
Montgomery CountyRecorded, too few records for a resultYes: year-round
Morgan CountyRecorded, too few records for a resultYes: year-round
Morrow CountyRecorded, too few records for a resultYes: year-round
Muskingum CountyNo qualifying records yetYes: year-round
Noble CountyNo qualifying records yetYes: year-round
Ottawa County50 · Recorded, season not shownYes: year-round
Paulding CountyNo qualifying records yetYes: year-round
Perry CountyNo qualifying records yetYes: year-round
Pickaway CountyRecorded, too few records for a resultYes: year-round
Pike CountyNo qualifying records yetYes: year-round
Portage County33 · Recorded, season not shownYes: year-round
Preble CountyNo qualifying records yetYes: year-round
Putnam CountyNo qualifying records yetYes: year-round
Richland CountyRecorded, too few records for a resultYes: year-round
Ross CountyRecorded, too few records for a resultYes: year-round
Sandusky CountyRecorded, too few records for a resultYes: year-round
Scioto CountyNo qualifying records yetYes: year-round
Seneca CountyRecorded, too few records for a resultYes: year-round
Shelby CountyNo qualifying records yetYes: year-round
Stark CountyRecorded, too few records for a resultYes: year-round
Summit County267 · Recorded, season not shownYes: year-round
Trumbull CountyRecorded, too few records for a resultYes: year-round
Tuscarawas CountyRecorded, too few records for a resultYes: year-round
Union CountyRecorded, too few records for a resultYes: year-round
Van Wert CountyRecorded, too few records for a resultYes: year-round
Vinton CountyRecorded, too few records for a resultYes: year-round
Warren CountyRecorded, too few records for a resultYes: year-round
Washington CountyNo qualifying records yetYes: year-round
Wayne CountyRecorded, too few records for a resultYes: year-round
Williams CountyRecorded, too few records for a resultYes: year-round
Wood CountyRecorded, too few records for a resultYes: year-round
Wyandot CountyRecorded, too few records for a resultYes: year-round

Season

When it is recorded

In Hamilton County

Not enough evidence

The weeks are still too uncertain to show a season. Based on 35 records in 9 of the 10 years from 2016 to 2025, above the minimum of 20 records from 5 different years.
Show over the bars
Recording in Hamilton County · records of all species each week, 87,019 in all

Records per week from 35 records in 9 of the 10 years from 2016 to 2025. Shows when people recorded it, not a season or how common it is.

Show as a table
Records of Muskrat in Hamilton County each week, and records of all species
WeekRecords of MuskratYears recordedRecords of all species
Jan 4–1011392
Jan 11–1711344
Jan 18–2400312
Jan 25–3100206
Feb 1–700357
Feb 8–1400383
Feb 15–2111366
Feb 22–2811391
Mar 1–722551
Mar 8–1422523
Mar 15–2111750
Mar 22–28111,012
Mar 29 – Apr 4001,535
Apr 5–11221,960
Apr 12–18002,492
Apr 19–25222,403
Apr 26 – May 2003,783
May 3–9113,307
May 10–16112,059
May 17–23112,153
May 24–30002,390
May 31 – Jun 6112,648
Jun 7–13002,715
Jun 14–20112,695
Jun 21–27112,714
Jun 28 – Jul 4003,220
Jul 5–11112,980
Jul 12–18003,031
Jul 19–25112,961
Jul 26 – Aug 1112,795
Aug 2–8002,884
Aug 9–15222,696
Aug 16–22112,535
Aug 23–29002,536
Aug 30 – Sep 5002,606
Sep 6–12002,980
Sep 13–19002,959
Sep 20–26002,313
Sep 27 – Oct 3002,122
Oct 4–10001,828
Oct 11–17001,793
Oct 18–24001,338
Oct 25–31001,023
Nov 1–700676
Nov 8–1411593
Nov 15–2100384
Nov 22–2800496
Nov 29 – Dec 511356
Dec 6–1211478
Dec 13–1922285
Dec 20–2642322
Dec 27 – Jan 200388

In Ohio

Recorded all year

Recorded through most of the year, so there is no single season to show. Based on 1,499 records in 10 of the 10 years from 2016 to 2025, above the minimum of 20 records from 5 different years.
Show over the bars
Recording in Ohio · records of all species each week, 1,691,199 in all

Records per week from 1,499 records in 10 of the 10 years from 2016 to 2025. Shows when people recorded it, not a season or how common it is.

Show as a table
Records of Muskrat in Ohio each week, and records of all species
WeekRecords of MuskratYears recordedRecords of all species
Jan 4–101046,211
Jan 11–17845,146
Jan 18–241054,645
Jan 25–311054,698
Feb 1–71856,023
Feb 8–141375,888
Feb 15–211975,436
Feb 22–282296,846
Mar 1–74488,321
Mar 8–14491010,384
Mar 15–21551012,620
Mar 22–2841913,949
Mar 29 – Apr 445919,661
Apr 5–11511026,860
Apr 12–1841839,925
Apr 19–2557941,623
Apr 26 – May 267956,391
May 3–9831052,952
May 10–161221053,785
May 17–23671057,698
May 24–3037954,651
May 31 – Jun 6441053,099
Jun 7–1337853,700
Jun 14–2039956,625
Jun 21–2732755,361
Jun 28 – Jul 428858,477
Jul 5–1139861,336
Jul 12–1821964,722
Jul 19–2549869,753
Jul 26 – Aug 125959,416
Aug 2–820759,712
Aug 9–1526755,994
Aug 16–2213754,328
Aug 23–2913651,772
Aug 30 – Sep 514557,167
Sep 6–1219759,075
Sep 13–1915654,543
Sep 20–2614745,860
Sep 27 – Oct 316643,180
Oct 4–1021637,841
Oct 11–1713630,824
Oct 18–244321,156
Oct 25–3116519,021
Nov 1–714714,172
Nov 8–1415812,621
Nov 15–21647,965
Nov 22–281268,136
Nov 29 – Dec 5766,083
Dec 6–121066,004
Dec 13–191155,423
Dec 20–262075,661
Dec 27 – Jan 21788,459

What these results show

These results show when people recorded a species, not when or where it occurs. Missing weeks and low counts do not mean absence or scarcity, and counts are not abundance. Contributed records reflect where, when and what people chose to observe.

Identification

How to identify it

Often confused with

  • American Beaver Castor canadensisOften confused in Ohio: 58 identifications in Ohio named one where the other was meant
  • North American River Otter Lontra canadensis125 identifications worldwide named one where the other was meant
  • Groundhog Marmota (Marmota) monax111 identifications worldwide named one where the other was meant
  • Common Raccoon Procyon lotor48 identifications worldwide named one where the other was meant
  • American Mink Neogale vison47 identifications worldwide named one where the other was meant

From iNaturalist’s similar-species counts, refreshed monthly: confusions in Ohio first, then worldwide. Only species with an Ohio result are listed.

Land cover where it is recorded

Land coverIts recordsAll Ohio records
Developed34%49%
Wetland30%5%
Forest16%31%
Open water9%3%
Farmland8%11%
Grassland and shrub2%0.9%
Barren0.5%0.6%

From 599 records placed within 100 m, beside all Ohio records placed the same way. People record where they go, so this shows where records come from, not where the species lives. Land cover: USGS Annual NLCD, 2025 (opens in a new tab)

Sources

Where these results come from

  • Records from iNaturalist research-grade observations and expert-identified GBIF datasets, CC0, CC BY and CC BY-NC. Sources
  • Seasons use the published method and its evidence thresholds. Methods
  • See it on iNaturalist (opens in a new tab)OpenPhenology is independent and not affiliated with iNaturalist.

Records behind the Ohio result

1,499 records from 2 datasets.

To cite: the GBIF download doi:10.15468/dl.y2jkt8 (opens in a new tab).

A spreadsheet (CSV) with a link to each record, on iNaturalist or GBIF. Records whose location was hidden by the observer or the source are counted but not linked.