Would flood lights and a radio playing near the coop help keep a cougar away? We don't have them in my area, so I don't really have any proven ideas for how to keep them away. It's a shame they are dangerous to our pets. Otherwise, they would be such amazing creatures to have around. Personally, I would try lights, a radio, peeing around the coop and property, and maybe a REALLY large dog. Perhaps a gun with rubber bullets to sting it a couple of times will make it stay away.