A pack of wolves took down a bison in Yellowstone National Park and attracted a crowd of people — that the rest of the bison herd then charged into.

In Yellowstone National Park, wolves and other large carnivores are slowly but steadily bringing back balance to the ecosystem, particularly in herbivores and plants.

An iconic apex predator appeared through thick fog like an apparition and cautiously watched a photographer in Yellowstone ...

Footage shows the black wolf with a mystical quality – as other wolves remain mostly hidden – amid steam at a Yellowstone thermal area.

There are five Montana National Parks including two gems in the National Park Service; Glacier and Yellowstone National ...