A virus outbreak hit Yellowstone wolf pups hard in 2025.

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 ...

This bison herd said better luck next time to a pair of hungry wolves in Yellowstone National Park. It only makes sense that this incredible video below took place in Yellowstone. There’s an estimated ...

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 ...

Deep in the heart of Yellowstone National Park, audio recorders roughly the size of hardcover books are documenting wolf barks, elk bugles and bird chirps 24 hours of the day, seven days a week, 365 ...

A new scientific review challenges the headline-grabbing claim that Yellowstone’s returning wolves triggered one of the strongest trophic cascades on Earth. Researchers found that the reported 1,500% ...

A prominent wolf that lived among Yellowstone's most famous wolf pack is believed to have been illegally shot and killed just outside the park last month, according to wildlife experts. NOTE: The ...