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• Male American Bison Teton mountains

• Skull of American black bear

• Skull of American black bear

• Coyote with porcupine quills in muzzle.

• Hooded mergensers, Yellowstone

• American dipper on ice

• Adult coyote, Yellowstone

• Algae at thermal pool

• Male American Bison grazing

• Male American Bison

• Male American Bison crossing river

• Pack of wolves

• Wolves feeding on carcass

• Cottonwoods and frost

• Male American Bison dust bathing

• Male American Bison grazing

• Clearing snow from roofs

• Frosty Lodgepole Pine and mist

• Bull North American Elk

• Trumpeter Swans on Yellowstone River

• Bobcat in walking deep snow

• Bobcat along Madison River

• American Bison in snow storm

• Herd of Rocky Mountain Bighorn Sheep

• Male American Bison