Bull elk crossing the Madison River at sunrise in Yellowstone National Park Wyoming.
Fawn elk resting in Gibbon Meadows in Yellowstone National Park Wyoming.
Bull elk with frost on its back posing at sunrise in Gibbon Meadows in Yellowstone National Park Wyoming.
Bull elk bugling in Hayden Valley in Yellowstone National Park Wyoming.
Caribou grazing in Denal National Park Alaska.
Buck whitetail deer posing in fall color in Cades Cove in Great Smoky Mountains National Park Tennessee.
Caribou herd crossing the Thelon River in Northwest Territories Canada.
American Bison posing in early morning light in Yellowstone National Park Wyoming.