Bull elk with frost on its back posing at sunrise in Gibbon Meadows in Yellowstone National Park Wyoming.
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.
Caribou with antlers covered in velvet posing in Denali National Park Alaska.
Muskox posing in fall tundra near the Dalton Highway in Alaska.
Muskox posing in the fall color of the tundra of Northwest Territories Canada.
Two bull moose sparing Anchorage Alaska.
Bull moose posing Anchorage Alaska.
Moon rise over West Mitten Butte in Monument Valley.
Profile headshot of ice-covered grizzly bear on the Fishing Branch River at the base of Bear Cave Mountain in the Yukon Territory Canada.
Grizzly bear sow with her cub-of-the-year in tall grasses of Lake Clark National Park in Alaska.
Male grizzly bear displaying claws while walking through the water in Silver Salmon Creek in Lake Clark National Park in Alaska.
Grizzly bear cub-of-the-year carefully walking on a log in Lake Clark National Park Alaska.
Cheetah posing in the Serengeti National Park in Tanzania.
Cheetah scouting for prey in the Serengeti National Park in Tanzania.
Cheetah posing in Kalahari National Park in South Africa.