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American Bison, Buffalo
Two Bighorn Sheep on a hillside in Yellowstone National Park.
This group of Pronghorn feed on grass and sage brush near a group of American Bison in the mountain valleys near Gardiner MT.
Bighorn sheep ram, ovis canadensis, in rutting season, Grand Teton National park, Wyoming, USA
Bighorn Sheep (Ovis canadensis) group of male, ram, lying down, Yellowstone national park, Wyoming Montana, USA.
Grey (or gray) wolf looking over buffalo (bison) on snow covered hill.  This wolf is a large canine native to Eurasia and North America. The wolf is the largest extant member of the family Canidae, males average 88 lbs. and females average 82 lbs. The grey wolf can be various colors.  The banded fur is usually mottled white, brown, gray, and black. This was near Tower junction in Yellowstone National Park between Gardiner and Cooke City Montana. Larger nearby cities are Bozeman and Billings, Montana. John Morrison Photographer
Herd of Bisons sitting in Yellowstone National Park, Wyoming, USA.
Yellowstone National Park, Park County, Wyoming, United States. American bison in the Lamar Valley.
Beautiful thermal lake view in the Yellowstone National Park in Wyoming, USA
Bighorn sheep (Ovis canadensis) ram in Jasper National Park, Alberta, Canada.
Herd of Bison in the Hayden Valley, Yellowstone National park.
Bighorn sheep ram, ovis canadensis, in rutting season. Grand Teton National Park, Wyoming, USA
Two large bull elk in Banff National park. November
lots of bisons get together on the grassland in Yellowstone National Park
Bighorn sheep enjoying a sunny warm early autumn day in Waterton Canyon Colorado
American Bison at Lamar Valley in Yellowstone National Park, Wyoming
Sunlight illuminates the spray as the Yellowstone River crashes over the Lower Falls in Yellowstone's Grand Canyon.
Herd Big Horn ram sheep, near Pikes Peak moving in the Garden of the Gods in Colorado Springs, Colorado USA of North America.
Deers in Winter in Yellowstone National Park, Wyoming and Montana. Northwest. White tailed deers. Yellowstone is a winter wonderland, to watch the wildlife and natural landscape.
Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA
Badlands and Wildlife of the National Park
Wild Bison Roam Free Beneath Mountains of Yellowstone National Park
Bighorn Sheep Ram, Ovis O. canadensis, National Elk Refuge, Jackson Wyoming, February 5, 2011.
Black Pool hot spring with Yellowstone Lake in the background
A selective of a snow sheep (Ovis nivicola) in a dry field
Elk at Lake Lodge in Yellowstone National Park, Wyoming
Herd of Bison in the Hayden Valley, Yellowstone National Park.
g Horn Sheep in the winter, Ovis canadensis, Yellowstone National Park Wyoming. Standing in the snow. Male.
bison grazing at Yellowstone National Park
Big Horn ram (sheep) grazing on snow covered cliff side in Yellowstone National Park in northwestern USA of North America.
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