We have a young German Shepard / Lab mix who has always been very interested in the chickens. This weekend she actually broke her run, and escaped down to the chicken area and was attacking the chickens. She went into the coop and chased them all out, then chased them outside. She had actually trapped our rooster underneath some equipment in the car port and he hurt his leg. It was bleeding. I finally caught her and brought her inside before she could kill any of them, but I'm concerned about what is going to happen in the future. Do any of you have any training tips to help me out and have a flock guardian rather than a chicken chaser?