When Polar Bears Attack

Examine the incredible size, speed and strength of some of the world’s biggest bears – the polar bear, brown bear and black bear. All native to North America, these formidable creatures can weigh more than 1,000 pounds, outrun an Olympic sprinter and take out prey with a single bite or swipe of the paw.

Ultimate Bear airs on Nat Geo Wild Sunday October 24 at 9P et/pt.

Video Preview: Be grateful you aren’t an Arctic seal when polar bears are feeling peckish — these fierce predators can kill with one swift strike.