We have had a Great Pyrenees for a year now after having a Hawk attack and he has been so great. He will not let anything big or small near the coop. He has watched the roos alert because of a hawk flying by and now will run and bark at the hawk too. It is not uncommon to walk out to make sure everyone is fine and see him laying in the sun with chickens laying no and around him. So funny. So if you have the room on your land get one. Best worker on the farm.