Wind Cave National Park is home to a large variety of animals. Bison and pronghorn roam the park's prairie. Prairie dogs can be heard as they forage for grass on the park's prairie dog towns. Elk and deer can be seen throughout the park. Predators, such as coyotes and bobcats, can be seen hunting in the prairie dog towns.
Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.