An iconic apex predator appeared through thick fog like an apparition and cautiously watched a photographer in Yellowstone National Park, stunning video shows.

Scientists have uncovered what they believe to be the oldest saber-toothed animal on record — a furless, husky-sized predator from a "ghost" lineage of ancient mammal relatives. This strange ...

An iconic apex predator appeared through thick fog and ... Bo Welden, the wildlife guide who captured the footage, said encountering the “ghost wolf” was “the most quintessential Yellowstone ...