When a wolf, one of Yellowstone's fiercest predators, sets its eyes on a prey, it can go to any lengths, literally. For a tour guide and their client, the day started as a usual wildlife outing until ...

Add Yahoo as a preferred source to see more of our stories on Google. Wolves are swift and agile, but they typically remain close to the ground while chasing prey. But not always. The accompanying ...

A tour guide and his client this week witnessed an extraordinary scene involving wolves chasing two elk for 3-plus miles in Yellowstone National Park. The accompanying footage, captured by guide ...