A flare up of a disease that’s especially lethal to wolf pups took a toll on Wyoming and Yellowstone National Park wolf numbers in 2025, reducing biologists’ counts to a level last seen when wolves ...

Wyoming wildlife managers plan to reduce how many wolves can be hunted by 50% following a canine distemper outbreak that has ...

Over the last three decades, Yellowstone National Park has undergone an ecological cascade. As elk numbers fell, aspen and willow trees thrived. This, in turn, allowed beaver numbers to increase, ...

Thirty years ago, park rangers reintroduced grey wolves into Yellowstone National Park. They wanted to restore the ecosystem and get the elk... How the wolf changed Yellowstone 30 years after ...

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 ...

Colorado’s wolf restoration program is struggling amid federal roadblocks over where the state can source new wolves for reintroduction and the death of a 10th translocated wolf. The latest wolf ...

Despite distemper-driven decline, most remaining canines now have strong antibodies and resistance — and state biologists are ...

A big thank-you to Jim Vacca for his important and eloquent essay on Colorado’s gray wolf reintroduction program. Having just ...