Hello everyone we recently adopted a little mixed breed puppy from the humane society and he is cute as can be! The thing is, he LOVES to terrorize the chickens and has recently killed one of our pigeons. He is only about 9 weeks old. I know this is just him being a playful puppy, but I'm scared if we don't do something now we will have a problem in the future. The chickens free range, and the puppy will just be a big ole farm dog that roams wherever he wants. Will he grow out of this agressiveness? If not, is there a way to teach him to not even go around or touch the chickens?