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

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 ...

Johnnie LeFaiver took her son to the Lamar Valley in Yellowstone National Park this summer, because the experience of watching wolves there 20 years ago seared into her memory and she wanted Micah to ...

On Dec. 11, 2025, Colorado Parks and Wildlife officials captured and returned a wolf into Grand County, Colorado, that had ...

In Yellowstone National Park — where gray wolves were reintroduced starting in 1995 — researchers have gone back and forth on whether the restoration of wolves has impacted the ecosystem. The idea is ...

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

Oregon State University researchers have documented the first new generation of overstory aspen trees in Yellowstone’s northern range in 80 years, three decades after wolves were reintroduced to the ...

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.

D E N V E R, Jan. 14 -- In a victory for environmentalists and a defeat for ranchers, a federal appeals court on Thursday upheld the right of the gray wolf to roam freely through Yellowstone National ...

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 ...