Just a few criticisms, this doesn't take into account popularity of certain dog breeds. for ex. there's tons more labs than shiba inu's, we'll just say 7:1 labs to shiba's. This means that its statisticaly more likely more a lab to attack a bird than a shiba, 7x more likely to be precise. This does not mean that labs are worse with chickens, it simply means that there are more of them. Another problem is that you are not taking into account training of the dogs. We have a field spaniel mix that we rescued who was obsessed with the birds and attacked through the chicken wire, we taught her that this was not acceptable, but she could however chase the sparrows. She hasn't looked at the birds in years. I was raised around dogs, more so than chickens, and one of my few complaints about this board is that people don't understand dogs. They are not godless killing machines, they just may not know better. If your neighbors dog is on your property don't get out the gun, don't call the dog catcher, and don't blame the dog. We also have a golden retriever, he's is the most non aggressive dog that ever lived. I ounce put a chicken (old english bantam hen, so yes it did fit) in his open mouth to see what he would do, knowing he wouldn't hurt it, he just sat there with the bird in his mouth for three minutes before putting it down.