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.
Two bull moose sparing Anchorage Alaska.
Muskox posing in fall tundra near the Dalton Highway in Alaska.
Pika on the Savage River trail in Denali National Park posing on a boulder in the fall color.
Two bighorn sheep rams interacting.
Dall sheep interacting by touching heads on Slope Mountain near the Haul Road in Alaska.
Dall sheep lamb nursing on Slope Mountain near the Haul Road in Alaska.
Dall sheep ram posing on a boulder against blue sky on Primrose Ridge in Denali National Park Alaska sky on Primrose Ridge in Denali National Park Alaska.
Caribou with antlers covered in velvet posing in Denali National Park Alaska.
Mother Polar Bear resting with her two three-month-old cubs in Wapusk National Park south of Churchill Manitobe Canada near the Hudson Bay.
Mother Polar Bear watching her two cubs playing at their day den in Wapusk National Park south of Churchill Manitoba Canada near the Hudson Bay.
Mother Polar Bear resting with her two three-month-old cubs in Wapusk National Park south of Churchill Manitoba Canada near the Hudson Bay.
Mother Polar Bear with her two cubs in Wapusk National Park south of Churchill Manitoba Canada walking toward Hudson Bay.
Mother Polar Bear with her two cubs resting in a blizzard in Wapusk National Park souty of Churchill Manitoba Canada near the Hudson Bay.
Two cubs-of-the-year playing while staying close to their mother in Wapusk N.P. near Churchill, Manitoba, Canada
Two cubs-of-the-year staying close to their mother in Wapusk N.P. near Churchill, Manitoba, Canada.
Polar bear on iceberg on Baffin Island, Nunavut, Canada, peering over the edge.
Polar Bear standing on the pack ice in the Arctic Ocean near Svalbard.
Polar Bear Cubs keeping close to their mother in Wapusk National Park south of Churchill Manitoba Canada near the Hudson Bay.
Polar Bear Cubs climb on mother's back while playing in Wapusk National Park south of Churchill Manitoba Canada near Hudson Bay.
Mother polar bear nursing her two cubs in Wapusk National Park south of Churchill Manitoba Canada near the Hudson Bay.
Two three-month-old polar bear cubs playing near their den in Wapusk National Park south of Churchill Manitoba Canada near the Hudson Bay.