The U.S. Fish and Wildlife Service estimates there are only 162 Mexican gray wolves living in New Mexico right now. CATRON COUNTY, N.M. – The U.S. Fish and Wildlife Service estimates there are only 162 Mexican gray wolves living in New Mexico right now. Just this week, wildlife advocates revealed a third wolf – named Ella – ventured north of I-40, the northern border of their designated recovery zone, and was found dead a few days later.