Previous research on the effect of wolves on the food web has been criticized, raising questions about the predator’s role in ...

On four separate occasions, Wolf 907F seized power as the alpha female leader of the Junction Butte Pack in Yellowstone National Park. (National Park Service file photo courtesy of Jeremy ...

Claims that wolves have rescued Yellowstone National Park's aspen trees through a "trophic cascade" oversimplify a complex story.

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk... What is the legacy of Yellowstone wolves 30 years after ...

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk population, which had decimated the plant community, in ...

This winter saw the most wolves from Yellowstone National Park killed in about a century. That's because states neighboring the park changed hunting rules in an effort to reduce the animals' numbers.

Up until the mid-1990s, the ecosystem of Yellowstone National Park had turned into a gloomy, barren land, overgrazed and overpopulated by elk. But ever since wolves were reintroduced in the park, the ...