Few animals symbolize wild interconnectedness quite like wolves, whose return helped reveal just how tightly ecosystems are ...

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 ...

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, ...

Wolves usually rely on cooperation to survive. Hunting large prey such as elk typically involves multiple pack members working together to isolate and exhaust an animal. That reality makes one ...

Learn more about the canine distemper outbreak that could have reduced Yellowstone wolf pup populations to a historic low.

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 ...

The award-winning documentary “Lost Wolves of Yellowstone,” in IMAX, is now showing on San Diego’s largest IMAX screen, in the giant dome of the Fleet Science ...