Yellowstone's Junction Butte wolf pack failed in a recent attempt to kill a bison, but the pack appears to be thriving again after the death of its former alpha female, Wolf 907F.

The first grizzly bear to appear this spring with a new cub in Yellowstone National Park’s Lamar Valley wasn’t messing around when she fended off a ...

Yellowstone is no stranger to wildlife drama, but the latest development has park officials and conservationists on high alert. The world’s largest wolf pack is amassing near the park’s borders, ...

Master wolf-observer Rick McIntyre's new book transports readers to the middle of the action, guest reviewer Michael Palmer ...

Wolves are now thriving in Yellowstone, but researchers monitor them closely. Photograph by David Guttenfelder The Mollie’s wolf pack investigates grizzly bear tracks in Yellowstone’s Pelican ...

They are wild, as we once were.” The Mollie’s wolf pack investigates grizzly bear tracks in Yellowstone’s Pelican Valley. Wolves were reintroduced into the park beginning in 1995 ...

In winter, when snow slows down bigger animals, a wolf pack tends to work together, bringing down an elk every other day or so. The constant combat takes a toll. In Yellowstone National Park ...

Some howls are meant to check on pack members, while others cast territorial warnings to intruders. Howling is like music to conservationists' ears. This especially rings true at Yellowstone National ...

This exact interaction was caught on this video from Yellowstone National Park. It shows the alpha wolf 907F of the Junction Butte Pack — the oldest wolf in the park at the time — feeding on a ...

The endangered gray wolf was a crucial part of the Yellowstone Wolf Project, an ambitious reintroduction plan nearly 20 years in the making. Shortly after nightfall on January 12, 1995 ...