A trail runner in Colorado ends up running for his life?and a peaceful walk in the Canadian woods turns deadly. When we venture into the realm of wild animals, sometimes a chance encounter leaves us fighting for our lives. It's a story of hunter versus hunted?and only one may survive.

Some of the greatest natural spectacles in the world are animals on the move. On land, in the air and at sea, many animals must migrate to survive.

Some of the greatest natural spectacles in the world are animals on the move. On land, in the air and at sea, many animals must migrate to survive.

Ultimate Animals is your ultimate guide to everything and anything under the sun about all your favorite animals. Each fact-filled 30-minute episode will feature 2 animals, breaking down the science and idiosyncrasies of the creatures using expert interviews, state of the art graphics, slow-motion capture specialty shoots, and the most amazing moments of animal action ever caught on tape.