The US Fish and Wildlife Service says a pack of endangered Mexican gray wolves has killed a horse belonging to a Catron County family. Mark Miller and his family returned to their homestead on the Diamond Creek in southwestern New Mexico about three weeks ago to find the remains of their horse. Tracks show the wolves apparently chased the horse from a pasture into a corral and killed it. Miller says his family has tried yelling at the wolves, throwing rocks and installing noisemakers, but he says the pack continues to be a problem.