Wolf Attacks Surge in Sierra Valley, Leaving Ranchers on Edge

California’s experiment in wolf coexistence has reached a breaking point in Sierra Valley, where wolf attacks on cattle have more than doubled this summer despite the deployment of a state “strike team” of wardens and scientists working around the clock.

In recent months, ranchers in Sierra and Plumas counties have reported dozens of calves killed—sometimes several in a single night—costing families tens of thousands of dollars. Data gathered by UC Davis researchers shows wolf attacks climbed from 30 calves killed by early June to 76 by mid-September. Statewide, incidents grew from 54 in June to 122 in early September.

Much of the predation has been linked to the Beyem Seyo pack, which includes three adults and a litter of pups. The wolves have become fully habituated to living near ranches, targeting calves on private land. Ranchers describe sleepless nights patrolling with drones, night-vision binoculars, and even USDA-operated aircraft firing rubber bullets and blasting loud noises in an effort to scare the predators away.

The situation has grown so severe that local officials organized trauma training for residents and multiple counties have declared public safety emergencies. Ranchers are now lobbying in Washington, D.C., for federal help, including the right to lethally remove wolves.

Environmental groups, however, continue to defend the animals’ protected status, noting their importance to ecosystems and arguing that nonlethal deterrents remain the best path forward.