It is also the dog's fault. I have "disappeared" a couple dogs, but ultimately informed owners I did it and why. My dogs have also bumped of a couple and seriously mauled more visiting dogs. Another dog I broke down and trained to leave chickens alone. She now helps my dogs keep other dogs and Coyotes away. In some situations, I like to consider myself as part of the greater neighborhood and do my part training kids / dogs of others in the village. I also use fencing. Dogs in immediate vicinity well known, but the newbies coming from more than 1/2 mile away could cause considerable damage if fence, my dogs, or me do not stop the visitors. Over the long run, the fencing has been the most cost-effective proactive measure for protecting my chickens in a semi-rural setting.