DIGITAL EXCLUSIVE | WOLVES & RANCHERS: Endangered species protections. Ranchers are losing sleep, money, and peace of mind. As gray wolves return to Northern California, ranchers in the Sierra Valley say the impact goes far beyond livestock. Nearly 100 animals were killed last year. New attacks are now being reported. And many say current deterrents are temporary while the stress is constant. State and federal laws strictly protect wolves ~ but ranchers argue the rules leave families and livelih