TIAWAH, Okla. (AP) — Authorities in Oklahoma say a rancher attempting to deliver a calf was dragged to death by the cow after he became entangled in a chain. Rogers County Sheriff Scott Walton says the 75-year-old man was using a calf-pulling chain to help deliver the calf Tuesday when something spooked the cow, causing it to take off running. The sheriff says the rancher's wrist was caught in the chain and he was dragged behind the cow. He tells the Claremore Daily Progress that the rancher was still entangled in the chain when emergency responders arrived. Walton says authorities euthanized the cow in hopes of saving the man's life but that the rancher was pronounced dead at the scene.