A mountain lion killed a family's pit bull in Los Angeles, California, according to officials.The mountain lion was first seen at around 5 a.m. on Saturday near the Oakridge mobile home park by Foothill Blvd. and Glenoaks Blvd. in the Sylmar neighborhood, Fox 11 reported.Officials issued a "wildlife warning" for the San Fernando Valley following the incident, according to the outlet.One resident, Rey Constante, was returning home when he noticed the mountain lion on top of a gray pit bull with a leash still attached.WATCH WHAT HAPPENS WHEN OREGON ZOO LIONS FIND HIDDEN CAMERA IN HABITAT"Huge mountain lion just killed