It tore through a smallish hole and killed 5 of our 7 chickens that were in the chicken tractor. it is older chicken wire 3 years. Thinking its a raccoon. i need to keep this breed for a breeding program HELP i don't want more dead chickens? Though about guard dog however we have a lab and a sheepdog already and the sheepdog is in training with the sheep herding thing don't know if it would be wise to get another until he is trained. The one who survived was one hen that ran away luckily unharmed and a beat up rooster that fought back. HELP please