Koala mauling is an uneasy reminder of mountain lions' place in Southern California

Natalie Riggs was sickened by the sight of the carcasses of cherished pets ravaged by a mountain lion.

Blood streaked the ground in the pen where her two sheep, Blanca and Blackie, had their throats slashed. Blanca's hindquarters had been eaten. Blackie was killed for no apparent reason.

"It was...