Wolves in Yellowstone National Park have experienced a 27% decline in population in 2025.

The official count came to 84 wolves in eight packs. That’s down from 108 wolves in nine packs at the end of 2024.

A Yellowstone wolf (Courtesy NPS/Jacob W. Frank) Editor’s note: WyoFile partnered with Mountain Journal to produce this story. If not for a series of tones broadcasting her location, no one would’ve ...

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 ...

Aspen forest is reclaiming the skyline of Yellowstone National Park after decades of controversy over efforts to return wolves to the ecosystem. The successful growth of a new Aspen overstory for 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.

In Yellowstone’s wild chess match between wolves and cougars, it turns out the real power play is theft. After tracking nearly a decade of GPS data and thousands of kill sites, researchers found that ...

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 ...

Although a spectacular photo taken by a wildlife photographer in Yellowstone may give the illusion that this grizzly and two wolves are buddies, ...