Mammals of Theodore Roosevelt National Park
The 14 mammals you can find at Theodore Roosevelt National Park, like the American badger — sizes, diets, and whether you should worry.
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Mammal American badger
Taxidea taxus
A short, wide-bodied digger with a white-striped face, common on the grasslands of Yellowstone and Badlands, that can vanish underground in minutes.
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Mammal American beaver
Castor canadensis
North America's largest rodent, a keystone species whose dams reshape whole streams at Yellowstone, Glacier, and ten other parks along the route.
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Mammal American bison
Bison bison
The biggest land animal in North America, a shaggy grazer of the plains you can watch cross the road in Yellowstone.
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Mammal Bighorn sheep
Ovis canadensis
A wild sheep of cliffs and canyons, where rams carry heavy curled horns and both sexes cross steep rock other animals can't.
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Mammal Black-tailed prairie dog
Cynomys ludovicianus
A burrowing ground squirrel, not a dog. Its towns along Theodore Roosevelt's scenic loop mow the grass short and pull bison and pronghorn in to graze.
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Mammal Bobcat
Lynx rufus
A small wildcat about twice the size of a house cat, common but rarely seen, that can bring down prey many times its own weight.
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Mammal Coyote
Canis latrans
The wild dog you're most likely to hear at a national park — a coyote, at home in the desert, the mountains, and the edges of towns.
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Mammal Elk
Cervus canadensis
A large deer of mountain meadows whose bulls grow branching antlers and, each fall, bugle a high whistling call across the valley.
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Mammal Feral horse
Equus ferus caballus
Ranch horses turned loose on the open range and never gathered back. Their descendants live in Theodore Roosevelt's South Unit as feral livestock.
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Mammal Mountain lion
Puma concolor
A tan, solitary big cat found from Glacier to Mesa Verde, called cougar, puma, or panther by region, and rarely seen at all.
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Mammal Mule deer
Odocoileus hemionus
A western deer named for its big mule-like ears, common along canyon rims and desert washes in Grand Canyon, Zion, Yosemite, and Saguaro.
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Mammal North American porcupine
Erethizon dorsatum
A slow, quill-covered rodent that climbs into the treetops at Theodore Roosevelt to eat twigs, and North America's second-largest rodent after the beaver.
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Mammal Pronghorn
Antilocapra americana
North America's fastest land mammal, seen in Yellowstone's northern range and at Lava Beds, built to outrun a predator that went extinct 12,000 years ago.
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Mammal White-tailed deer
Odocoileus virginianus
The most common large mammal in eastern parks, running through the woods and waving a white tail like a flag when it bolts.