In 1976, the Mexican gray wolf was declared an endangered species by the U.S. Fish and Wildlife Service. Once driven to the ...

The U.S. Fish and Wildlife Service says it killed a Mexican Gray Wolf in Arizona by mistake last week. Wildlife advocates are ...

Colorado's collared gray wolves continued to travel widely last month—even roaming in watersheds that reach into the western ...

CLIFTON, Ariz. ( KPHO /Gray News) - A federal agency mistakenly killed an endangered and possibly pregnant Mexican gray wolf ...

While conservationists say it’s a tragedy, ranchers in the area say the wolves have become a problem. The once-abundant Mexican gray wolves were considered extinct in the wild until about 25 ...

A California sheriff said that gray wolves have killed more than a dozen cows in Sierra County this month, and are posing a ...

Colorado has agreements with Utah, New Mexico and Arizona to recapture wolves that wander into those states and return them to Colorado, a move aimed at protecting the genes of the Mexican gray wolf.

A federal agency mistakenly killed an endangered and possibly pregnant Mexican gray wolf in Arizona. According to the U.S. Fish and Wildlife Service, an unknown federal agency killed a 7-year-old ...