Stock photography, photos: Tundra Triangle Stock photos of Polar bears forming geometric shapes while sparring on tundra in snowstorm. Near Churchill, MB, Canada Photograph: © Brad Hill Click for a larger image and more information Keywords associated with this stock photo: animal, wildlife, wild, mammal, carnivora, carnivore, ursidae, ursus maritimus, polar bear, behavior, predation, predatory, predator, spar, sparring, fight, fighting, box, boxing, wrestle, wrestling, geometry, geometric, triangle, mathematics, math, snow, snowy