Not even park rangers are off limits for angry bull elk.

Thirty years after their reintroduction in Yellowstone, wolves have proven their ecological worth, at least in the context of ...

as well as elk calves, through mid-May. They also dig up caches of seeds made by gophers and squirrels. By the time summer ...

Wolves culled the elk. Fewer elk means more aspens can grow. More beavers are attracted to the trees. It's called a trophic ...

Three decades after their reintroduction, Yellowstone’s wolves have transformed the park. What’s next for the ecosystem and ...

Notoriously elusive, cougars vary their range in response to their prey, mostly elk and deer. In winter they favor the shallow snow in the northern reaches of Yellowstone. This cougar was caught ...

But the huge fire of 1988 ultimately produced few large trees. The elimination of Yellowstone's wolves allowed the elk to browse aspens unchecked. Finally, Ripple and Larson decided to look within ...

Mark Hebblewhite is a professor of ungulate habitat ecology at the University of Montana. He and the University’s W.A. Franke College of Forestry and Conservation have collaborated with the ...

Booking a guided snowmobile tour through Yellowstone Vacations is the most straightforward way to secure your spot for an unforgettable winter adventure.