If this is an illegally shot animal, I am not shooting it again, I am calling the wildlife officials and police. It is their job to put these animals down. This is a "crime scene" animal in my mind, and if I shot it for humane reasons, it may mess up any evidence on the body of the animal. If , however , while on the phone with the officials , they instructed me to kill the animal but remain on scene, I would do it, such as if the animal was a long time and distance away from anyone official that could put it down. That would be cruel. IF they could get there quickly, it is their job to do it.