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

Scientists debunk decades-long study claiming wolves' reintroduction triggered a dramatic transformation in Yellowstone.

A new peer-reviewed study reports that claims of a “world-leading” trophic cascade in Yellowstone National Park are not supported, citing problems with the methods used in earlier research. A newly pu ...

At the age of 11 years, 9 months, Wolf 1090F has earned the title of the oldest living wolf in Yellowstone, which is ...

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 ...

Now, the researchers at Yellowstone National Park want to learn wolf language beyond what has been fed to us through fictional imitations. Journalist Matt Standal of PBS Montana arrived at the coveted ...

A grey wolf prowls through Yellowstone National Park near Mammoth Hot Springs in Montana. A group of 66 wolves was reintroduced to Idaho and Yellowstone in the late 1990s. They now total 2,800 ...

Colorado Parks and Wildlife could lose authority over the reintroduction of gray wolves in the state, according to a warning ...

This is the first story in a two-part series recapping Colorado’s second year of wolf reintroduction.  Colorado’s wolf program was eventful from the start in 2025. Just over a week into the ...