Authorities are searching for an “aggressive” mountain lion that killed a German shepherd in a Fontana backyard Wednesday and kept returning to the home despite being shot at by police. About 3:30 a.m. a resident in the 4100 block of Fox Borough Drive heard his dog crying out and went outside to find a large mountain lion standing over his dead 100-pound German shepherd, the Fontana police said in a statement. http://www.latimes.com/local/lanow/la-me-ln-aggressive-mountain-lion-search-20140305,0,6377684.story#ixzz2v9UKdfWZ