Wildlife cameras positioned throughout Yellowstone National Park have captured something researchers didn't expect to see.

After nearly a century’s absence, gray wolves continue to recolonize California, bringing changes and challenges to the state and its inhabitants. Ongoing research and monitoring programs are helping ...

With its enchanting eyes, powerful jaws, acute senses and haunting howls, the gray wolf (Canis lupus) — the largest member of the dog family — is a wilderness icon. Once the most widespread mammal on ...

California’s expanding gray wolf numbers — a conservation success for an endangered species — have worried ranchers in recent years as wolf-related livestock kills mount. Some ranchers are adapting to ...