My daughter caught the neighbor's dog in our chicken PEN again, chasing them. I went down and found the ground inside the pen covered with feathers + a lot of bleeding chickens. I have gotten used to the damage the roos inflict upon each other, but this made me sick. Then furious! This is the same dog that pooped in the coop before I got the idea of putting a baby gate across the doorway. I keep it open during the day to air out more. She poops in the chicken yard nearly every day, and has wiggled into the pen once before. Her owners have told me that she doesn't just chase things (like my dog), she seems to enjoy killing them. I have doctored everyone I could get hold of (decided not to chase them myself and make things worse) and I put out peppermint to (I hope) keep the flies away. I gave them some corn cobs for treats and fresh cold water. I'm just so angry and sick that I don't know what else to do.