I had 4 boxers and when I first got chickens, my dogs ran up to the fence to see what they were since they never saw chickens before. I had a shocker fence the whole way around the wire fence, and every one of them got shocked and they don't go near them anymore.have a young pup who will be just over a year old when I order my keets in the spring. Has anyone had experience training a lab mix puppy to respect chickens and guineas?