Our neighbor's dog escaped from his pen, came over into our (fenced) yard and attacked our chickens. He got a hold of "Pearl", she's a BR mix and almost 2 years old. He got her on either side of her rear end, and the skin on on side is completely torn off (there's a hole about the size of an egg, and the muscle is showing). I cleaned the wounds with warm water and Calendula essence, but don't know where to go from here. She's eating and drinking right now. Please help!