Mammals of Iowa
The mammals most often spotted in Iowa, ranked by recent research-grade observations.
Most-observed mammals in Iowa
White-tailed Deer
Odocoileus virginianus
3,470 observations
Eastern Fox Squirrel
Sciurus niger
2,224 observations
Eastern Cottontail
Sylvilagus floridanus
1,834 observations
Common Raccoon
Procyon lotor
1,170 observations
Eastern Gray Squirrel
Sciurus carolinensis
1,131 observations
Eastern Chipmunk
Tamias striatus
821 observations
Groundhog
Marmota monax
674 observations
Virginia Opossum
Didelphis virginiana
553 observations
American Beaver
Castor canadensis
468 observations
Red Fox
Vulpes vulpes
451 observations
Muskrat
Ondatra zibethicus
418 observations
Coyote
Canis latrans
316 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
233 observations
American Mink
Neogale vison
188 observations
Big Brown Bat
Eptesicus fuscus
160 observations
Domestic Cat
Felis catus
159 observations
Northern Short-tailed Shrew
Blarina brevicauda
157 observations
Franklin's Ground Squirrel
Poliocitellus franklinii
156 observations · iNaturalist
Striped Skunk
Mephitis mephitis
153 observations
Eastern Mole
Scalopus aquaticus
98 observations
Bobcat
Lynx rufus
81 observations
North American River Otter
Lontra canadensis
65 observations
Western Meadow Vole
Microtus drummondii
48 observations · iNaturalist
American Badger
Taxidea taxus
47 observations
White-footed Mouse
Peromyscus leucopus
43 observations
House Mouse
Mus musculus
36 observations
American Red Squirrel
Tamiasciurus hudsonicus
36 observations
Masked Shrew
Sorex cinereus
33 observations
Eastern Red Bat
Lasiurus borealis
31 observations
Plains Pocket Gopher
Geomys bursarius
21 observations
Tri-coloured Bat
Perimyotis subflavus
19 observations
Little Brown Bat
Myotis lucifugus
14 observations
Eastern Deermouse
Peromyscus maniculatus
13 observations
Brown Rat
Rattus norvegicus
11 observations
Prairie Vole
Microtus ochrogaster
10 observations
Least Weasel
Mustela nivalis
10 observations
Northern Hoary Bat
Lasiurus cinereus
9 observations
Western Harvest Mouse
Reithrodontomys megalotis
9 observations
Domestic Dog
Canis familiaris
8 observations · iNaturalist
American Ermine
Mustela richardsonii
8 observations · iNaturalist
Western Deer Mouse
Peromyscus sonoriensis
8 observations · iNaturalist
American Bison
Bison bison
7 observations
Southern Flying Squirrel
Glaucomys volans
7 observations
Evening Bat
Nycticeius humeralis
5 observations
Silver-haired Bat
Lasionycteris noctivagans
4 observations
American Black Bear
Ursus americanus
4 observations
White-tailed Jackrabbit
Lepus townsendii
4 observations
Elk
Cervus canadensis
4 observations
European Rabbit
Oryctolagus cuniculus
3 observations · iNaturalist
Moose
Alces alces
3 observations