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White-tailed Deer
Odocoileus virginianus
2,474 observations
Eastern Fox Squirrel
Sciurus niger
1,242 observations
Eastern Cottontail
Sylvilagus floridanus
1,124 observations
Common Raccoon
Procyon lotor
719 observations
Eastern Gray Squirrel
Sciurus carolinensis
676 observations
Eastern Chipmunk
Tamias striatus
673 observations
Groundhog
Marmota monax
392 observations
American Beaver
Castor canadensis
341 observations
Virginia Opossum
Didelphis virginiana
318 observations
Red Fox
Vulpes vulpes
292 observations
Muskrat
Ondatra zibethicus
233 observations
Coyote
Canis latrans
148 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
144 observations
American Mink
Neogale vison
124 observations
Domestic Cat
Felis catus
108 observations
Northern Short-tailed Shrew
Blarina brevicauda
103 observations
Striped Skunk
Mephitis mephitis
90 observations
Big Brown Bat
Eptesicus fuscus
78 observations
Eastern Mole
Scalopus aquaticus
65 observations
Bobcat
Lynx rufus
53 observations
North American River Otter
Lontra canadensis
50 observations
American Badger
Taxidea taxus
35 observations
American Red Squirrel
Tamiasciurus hudsonicus
32 observations
Western Meadow Vole
Microtus drummondii
31 observations
Masked Shrew
Sorex cinereus
25 observations
White-footed Mouse
Peromyscus leucopus
22 observations
Plains Pocket Gopher
Geomys bursarius
20 observations
House Mouse
Mus musculus
17 observations
Eastern Red Bat
Lasiurus borealis
15 observations
Eastern Deermouse
Peromyscus maniculatus
10 observations
Domestic Dog
Canis familiaris
8 observations
Tricolored Bat
Perimyotis subflavus
8 observations
Northern Hoary Bat
Lasiurus cinereus
7 observations
American Ermine
Mustela richardsonii
7 observations
Western Harvest Mouse
Reithrodontomys megalotis
6 observations
Least Weasel
Mustela nivalis
6 observations
Little Brown Bat
Myotis lucifugus
5 observations
Prairie Vole
Microtus ochrogaster
5 observations
White-tailed Jackrabbit
Lepus townsendii
4 observations
Brown Rat
Rattus norvegicus
4 observations
Southern Flying Squirrel
Glaucomys volans
4 observations
Silver-haired Bat
Lasionycteris noctivagans
3 observations
American Black Bear
Ursus americanus
3 observations
American Bison
Bison bison
3 observations
Moose
Alces alces
3 observations
Evening Bat
Nycticeius humeralis
2 observations
Wild Boar
Sus scrofa
2 observations
Northern Grasshopper Mouse
Onychomys leucogaster
2 observations
Domestic Cattle
Bos taurus
2 observations
Long-tailed Weasel
Neogale frenata
2 observations
Frequently Asked Questions
- The 10 most common mammals in Iowa are:
- White-tailed Deer (Odocoileus virginianus)
- Eastern Fox Squirrel (Sciurus niger)
- Eastern Cottontail (Sylvilagus floridanus)
- Common Raccoon (Procyon lotor)
- Eastern Gray Squirrel (Sciurus carolinensis)
- Eastern Chipmunk (Tamias striatus)
- Groundhog (Marmota monax)
- American Beaver (Castor canadensis)
- Virginia Opossum (Didelphis virginiana)
- Red Fox (Vulpes vulpes)
- The most observed mammal in Iowa is White-tailed Deer (Odocoileus virginianus), with 2,474 recorded observations.