SIERRA VALLEY – Following an unprecedented level of livestock attacks across the Sierra Valley, the California Department of Fish and Wildlife (CDFW), in coordination with the U.S. Fish and Wildlife Service (USFWS), has taken the difficult step of lethally removing four gray wolves (Canis lupus) from the Beyem Seyo pack. This action follows months of intensive non-lethal management efforts to reduce livestock loss and is grounded in the best available science and understanding of wolf biology.