Adult male Polar Bear (Ursus maritimus) in fresh snow near Churchill, Manitoba, Canada.

Adult male Polar Bear, Ursus maritimus, close-up near Churchill, northern Manitoba, Hudson Bay, Canada

Adult male Polar Bear, Ursus maritimus, resting on taiga outside Churchill, northern Manitoba, Hudson Bay, Canada

Polar Bear cubs (Ursus maritimus) running on open snow, Churchill, Manitoba, Hudson Bay, Canada

Adult male Polar Bear, Ursus maritimus, resting on frozen lake near Churchill, northern Manitoba, Hudson Bay, Canada

Adult male Polar Bear, Ursus maritimus, on frozen lake at sunset near Churchill, northern Manitoba, Hudson Bay, Canada

Adult male Polar Bears (Ursus maritimus) in ritualistic fighting stance (injuries are rare) near Churchill, Manitoba, Canada.

Adult male Polar Bears (Ursus maritimus) in ritualistic fighting stance (injuries are rare) near Churchill, Manitoba, Canada.

Adult male Polar Bears, Ursus maritimus, in ritualistic fighting (this almost never leads to serious injury) near Churchill, northern Manitoba, Hudson Bay, Canada

Adult male Polar Bear, Ursus maritimus, shaking like a dog after scratching his back on a willow tree near Churchill, northern Manitoba, Hudson Bay, Canada

marine, mammals, Curious, adult, male, Polar Bear, Ursus maritimus, white bear, sea bear, ice bear, northern bear, nanuq, inspects dog, Churchill, northern Manitoba, Hudson Bay, Canada, predator, dangerous, fur, blubber, translucent,

Mother Polar Bear (Ursus maritimus) with 3 month old cubs near Wapusk Park, northern Manitoba, Canada.

Adult Polar Bear, Ursus maritimus, pair swimming in open water, Hudson Bay, Manitoba, Canada