Les fights to keep up with the great Arctic Alaskan caribou herd as they race across the icy tundra on one of the world's longest, natural land migrations.
Survivalist Les Stroud travels to Karluk Lake on Kodiak Island, Alaska, to embed himself with the king of all brown bears.
Survivalist Les Stroud embeds himself deep in the Alaskan Interior, to track the survival skills of the moose in the run up to the mating season.