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Herd of buffalo crossing river in Yellowstone National Park
Dozens of bison graze in a high mountain field with the Rocky Mountains in the background.  It's late Spring and the mountains are still full of snow, with storm clouds rolling in, but the buffalo seem undisturbed.
Bull Elk
Black Diamond Pool Geysers at Yellowstone National Park. Biscuit basin trail.
A small herd of Bison grazing aling the rolling hills of Colorado.
Big horn ram sniffing the air on a steep hill side. This was taken in January at Round Prairie, Lamar Valley, Yellowstone National Park, Wyoming, USA.. Cooke City, Montana is the closest town.
Clouds of steam are rising from pools of hot water illuminated by intense low angle sunlight, Twin Geyser, West Thumb Geyser Basin, Yellowstone National Park
High-angle panoramic shot of the Yellowstone River cutting through the colored rock of the Grand Canyon of the Yellowstone in Yellowstone National Park
Bison in Yellowstone National Park
Pronghorns are among the fastest land animals in North America, capable of reaching speeds up to 55 mph. They are known for their impressive long-distance migrations, traveling up to 150 miles between summer and winter ranges. Despite early 20th-century population declines, conservation efforts have helped pronghorns rebound, making them a notable presence in the park's diverse ecosystem. Despite often being called \
Caribou grazing near a river with mountains close by.
Bison Grazing in the Lamar Valley of Yellowstone National Park.
Alberta, Canada
Two Big Horn ram sheep close up, near Pikes Peak standing high on a rock outcrop in the Garden of the Gods with massive sandstone rock formation in background in Colorado Springs, Colorado USA of North America.
Bull Elk
Stunning natural phenomenon
Excelsior Spring in Yellowstone
Two bull moose in the Snowy Range of Wyoming's Medicine Bow Mountains.
Elevated view of Grand Prismatic Spring
Geysers and Hot Springs at Yellowstone
Geyser Old Faithful erupts in Yellowstone National Park in Wyoming, USA
Two buck mule deer square off for a duel in a clearing on a cold Colorado winter morning.
Steam released from geysers at Yellowstone National Park in Wyoming.
An image of Yellowstone Geyser in Yellowstone National Park
Snowcapped mountains on the horizon of in Grand Teton National Park.
Pronghorn or antelope standing, close up on hill in the Yellowstone Ecosystem of western USA, North America. Nearest cities are Denver, Colorado, Salt Lake City, Cody, Jackson, Wyoming, Gardiner, Cooke City, West Yellowstone, Bozeman and Billings, Montana.
This beautiful bull elk was gathering his harem and looking for others bulls to scrap with during the annual elk rut in Grand Teton National Park.
Bison in Winter Landscape in Yellowstone National Park
bull, moose, fall
Wild moose in the beautiful dramatic alpine scenery of Denali National Park Alaska, USA
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