We just started letting our chickens free range about 2 weeks ago. Our neighbor has a lab/pit mix dog that has been coming down quite frequently since he moved back in the neighborhood. It has came down and chased the chickens back into their coop and bas been trying to get ahold of them. We have contacted him 4 times and asked him to keep the dog on a leash or at least watch him so he stays at home. He has said he would, but it has been here every time after talking to him. I just don't want it to chase my chickens or kill them. Do I call animal control? Advice on what to do?