PALMDALE --A local community is on alert over fears of a prowling mountain lion. The cat is believed to have killed a newborn horse overnight near Angeles Forest Highway and Forest Ridge Road in Palmdale. That's where Los Angeles County sheriff's deputies found paw prints this Saturday morning. A caretaker at the ranch says a horse gave birth overnight. But this morning, the foal had disappeared, leaving only the prints and a trail of blood leading into the woods. Just last week, authorities got a call of a mountain lion roaming around nearby Paloma Vista Park.