From MyHeraldReview.com:
For decades, the Mexican gray wolf has been protected by the Endangered Species Act (ESA) as numbers in the U.S. dropped to zero back in the 1970s. South of the border, just a few managed to hang on in remote areas.
The wolves were exterminated in the early 1900s due to conflicts with livestock, leading to their decline and listing of the species as endangered. Also for decades, U.S. ranchers were able spread out their stock onto public lands to graze them on hundreds of acres and free from concerns of wolf attacks. Then, it was decided to protect these wolves, build their numbers by reintroducing them to the Arizona landscape where their ancestors roamed for millennia.
