Using innovative conservation techniques, scientists are restoring populations of the endangered Mexican wolf to the wild.

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

The accidental killing of a Mexican gray wolf in Greenlee County has advocacy groups calling for transparency and ...

A government hunter mistakenly killed a Mexican gray wolf that was expected to give birth to pups soon, according to federal records associated with the April 14 incident.

A federal agency “mistakenly” killed an endangered and possibly pregnant Mexican gray wolf in Arizona, officials said.