Loading species data...
Fetching observations
Eastern Gray Squirrel
Sciurus carolinensis
13,801 observations
White-tailed Deer
Odocoileus virginianus
9,923 observations
Eastern Cottontail
Sylvilagus floridanus
8,631 observations
Eastern Chipmunk
Tamias striatus
4,596 observations
Common Raccoon
Procyon lotor
3,928 observations
Eastern Fox Squirrel
Sciurus niger
3,452 observations
Coyote
Canis latrans
2,333 observations
Virginia Opossum
Didelphis virginiana
2,198 observations
Muskrat
Ondatra zibethicus
1,961 observations
American Beaver
Castor canadensis
1,479 observations
Groundhog
Marmota monax
1,426 observations
Red Fox
Vulpes vulpes
937 observations
Domestic Cat
Felis catus
929 observations
Striped Skunk
Mephitis mephitis
690 observations
Northern Short-tailed Shrew
Blarina brevicauda
571 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
516 observations
American Mink
Neogale vison
489 observations
Brown Rat
Rattus norvegicus
342 observations
Mexican Long-nosed Armadillo
Dasypus mexicanus
295 observations
Eastern Red Bat
Lasiurus borealis
274 observations
Silver-haired Bat
Lasionycteris noctivagans
234 observations
Big Brown Bat
Eptesicus fuscus
207 observations
Eastern Mole
Scalopus aquaticus
191 observations
Southern Flying Squirrel
Glaucomys volans
162 observations
Western Meadow Vole
Microtus drummondii
132 observations
Bobcat
Lynx rufus
131 observations
North American River Otter
Lontra canadensis
113 observations
House Mouse
Mus musculus
107 observations
Plains Pocket Gopher
Geomys bursarius
105 observations
White-footed Mouse
Peromyscus leucopus
99 observations
American Red Squirrel
Tamiasciurus hudsonicus
83 observations
Masked Shrew
Sorex cinereus
72 observations
Eastern Deermouse
Peromyscus maniculatus
65 observations
Northern Hoary Bat
Lasiurus cinereus
47 observations
American Badger
Taxidea taxus
46 observations
Tri-coloured Bat
Perimyotis subflavus
44 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
36 observations
Domestic Dog
Canis familiaris
35 observations
Long-tailed Weasel
Neogale frenata
33 observations
Woodland Vole
Microtus pinetorum
26 observations
American Ermine
Mustela richardsonii
26 observations
Least Weasel
Mustela nivalis
20 observations
Prairie Vole
Microtus ochrogaster
15 observations
European Rabbit
Oryctolagus cuniculus
14 observations
American Bison
Bos bison
13 observations
Swamp Rabbit
Sylvilagus aquaticus
11 observations
Gray Fox
Urocyon cinereoargenteus
10 observations
North American Least Shrew
Cryptotis parvus
10 observations
Wild Boar
Sus scrofa
9 observations
Evening Bat
Nycticeius humeralis
8 observations
Frequently Asked Questions
- The 10 most common mammals in Illinois are:
- Eastern Gray Squirrel (Sciurus carolinensis)
- White-tailed Deer (Odocoileus virginianus)
- Eastern Cottontail (Sylvilagus floridanus)
- Eastern Chipmunk (Tamias striatus)
- Common Raccoon (Procyon lotor)
- Eastern Fox Squirrel (Sciurus niger)
- Coyote (Canis latrans)
- Virginia Opossum (Didelphis virginiana)
- Muskrat (Ondatra zibethicus)
- American Beaver (Castor canadensis)
- The most observed mammal in Illinois is Eastern Gray Squirrel (Sciurus carolinensis), with 13,801 recorded observations.