Some dogs’ instincts cannot be eliminated no matter how much training......we own 2 bird dogs that my husband hunts with. They are super sweet and very well trained, but their instinct and innate need to point, and hunt for birds is what they are bred for. When I decided to own chickens, I knew that I could not free range my flock with our dogs outside. Living in the wooded country is predator heavy anyway, and I made the responsible decision to free range only under close supervision. My flock is healthy and happy. My dogs are healthy and happy.....Win, Win!