Ranchers say their hands are tied as reintroduced wolves—listed as endangered—are feasting on cattle instead of hunting elk and deer.. Descendants of rewilded wolves are taking a heavy toll on cattle in Northern California and Oregon, killing calves and full-grown animals and putting stress on cow-calf operations and ranchers’ pocketbooks. Because wolves are listed as an endangered species under state and federal law, ranchers are hamstrung: They can’t shoot or harass these protected predators. The penalty for killing a wolf is steep; federal law carries a maximum sentence of one year in prison and a $100,000 fine, unless a rancher...