When a fox got into one of my henhouses in January and slaughtered 10 of my Buff Orpingtons, I had to cull my beautiful rooster, George (in my avatar), who had been several injured by the fox and was near death but kept lingering. It was awful, but I had to do it because he was in terrible pain and was suffering. I had called the neighbors to come over and shoot the fox in the henhouse (it was mangey), which they did, and they were still there and offered to do it for me but I knew I needed to do it immediately and not let George suffer any moments longer, so I culled him with everybody there. It was awful. Thankfully, they were mostly farm people who understood the situation and were empathic. George, rest in peace.