The expansion of gray wolf populations is upending California cattle operations, leading to millions of dollars in losses for ranchers, a report published Monday has found. The introduction of ...

A gray wolf has been found dead in a national park, prompting an investigation into the death of this federally protected ...

A collared gray wolf released in Colorado in January as part of the state's historic reintroduction effort died in Rocky ...

A collared gray wolf released in Colorado in January as part of the state’s historic reintroduction effort died in Rocky Mountain National Park this week, wildlife officials said Thursday.