Thirty-seven species of mammals have been identified at Indiana Dunes National Park. Four other species are thought to inhabit the park, but have not been documented: the northern long-eared myotis (Myotis septentrionalis), the Indiana bat (Myotis sodalis), the hoary bat (Lasiurus cinereus), and the southern bog lemming (Synaptomys cooperi) Common mammals seen by visitors and residents include the eastern cottontail, the eastern fox squirrel, the white-footed mouse, the white-tailed deer, and the meadow vole. Extirpated mammals include the common porcupine (Erethizon dorsatum), the gray wolf (Canis lupus), the red wolf (Canis rufus), the black bear (Ursus americanus), the fisher (Pekania pennanti), the cougar (Puma concolor), the Canada lynx (Lynx canadensis), the bobcat (Lynx rufus), the elk (Cervus canadensis), and the American bison (Bison bison). There are two threatened or endangered species in the dunes. The American badger (Taxidea taxus), on the Indiana threatened list is known to inhabit the area. The Indiana bat (Myotis indiana), on the federal endangered list is presumed to inhabit areas of the dunes. Recent records, documented photographically, indicate that North American river otter (Lontra canadensis) and bobcat (Lynx rufus) began returning to the area in 2011 and 2018, respectively. (en)
Thirty-seven species of mammals have been identified at Indiana Dunes National Park. Four other species are thought to inhabit the park, but have not been documented: the northern long-eared myotis (Myotis septentrionalis), the Indiana bat (Myotis sodalis), the hoary bat (Lasiurus cinereus), and the southern bog lemming (Synaptomys cooperi) (en)