Assistir Assistir PobreTV. From polar bears in the arctic tundra to black bears in the Northern Rockies, you'll see some of the most spectacular footage ever shot of these enterprising omnivores. Catch salmon with a group of hungry grizzlies on the McNeil River in Alaska. Crawl inside a den with a mother black bear and her cubs. Learn about the challenges facing each of these species as their habitat diminishes.