Several fearsome predators live in our National Parks, but do you know just how big the biggest grizzly bear to ever roam ...

From Alberta to Arizona, these are the biggest, baddest bulls ever taken with a bow and arrow. The number one typical elk of all time lived and died on federal land in Montana's Powder River country.

Today we call it the Irish elk, or Megaloceros giganteus. The biggest males weighed 1,500 pounds, about the same as an Alaskan moose, and they sported the largest antlers the world has ever known ...