Caribou herd crossing the Thelon River in Northwest Territories Canada.
Buck whitetail deer posing in fall color in Cades Cove in Great Smoky Mountains National Park Tennessee.
Caribou grazing in Denal National Park Alaska.
Bull elk bugling in Hayden Valley in Yellowstone National Park Wyoming.
Bull elk with frost on its back posing at sunrise in Gibbon Meadows in Yellowstone National Park Wyoming.
Fawn elk resting in Gibbon Meadows in Yellowstone National Park Wyoming.
Bull elk crossing the Madison River at sunrise in Yellowstone National Park Wyoming.
Bull Elk walking in deep snow in Yellowstone National Park Wyoming.
Bull moose in fall tundra near Wonder Lake in Denali National Park Alaska.
Cow moose eating in a small pond near Wonder Lake in Denali National Park Alaska.
Bull moose in fall color of tundra in Denali National Park Alaska.
Cow moose posing in a field of fireweed near Kenai Alaska.
Two bull moose sparing Anchorage Alaska.
Muskox posing in fall tundra near the Dalton Highway in Alaska.
Two bighorn sheep rams interacting.