Bison in Yellowstone National park141091613.jpg
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Bison, Firehole River, Yellowstone
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Bison, Hot Lake, Yellowstone National Park, 2006
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Bison Lamar Valley Yellowstone.jpg
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Bison at Lake Yellowstone.jpg
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Bison in the Yellowstone River, Hayden Valley
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Bison, Lamar Valley, Yellowstone (9/5/09)
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Bison in traffic Yellowstone National Park
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Bison near Norris Yellowstone National Park
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Bison wallows in Yellowstone DSC00577
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