So we have chickens and our neighbor has a dog that likes to come over. I brought it to his attention that his dog got one of my chickens. He said he would look after her better and that she was a stray and just gets into things. I am an animal guy but I refuse to let my animals suffer because someone else can't keep theirs contained...next time he comes over, would I be out of line for shooting it or are there other etiquette procedures I need to follow?