Unusual predator standoff: Video shows grizzlies and wolves confronting each other over a bison carcass in Yellowstone’s LeHardys Rapids, with aggressive displays but no injuries. Why it’s rare: ...

Yellowstone National Park visitors recently had a front row seat to watch a pack of wolves hunting a herd of bison, leaving them in awe of nature.

You mess with the calf, you get the herd. It's estimated that around 4,500 bison roam around Yellowstone National Park. Considering there's only 90 to 120 wolves in the same area, you'd imagine that ...