We are finally raising chickens this year. We got ten little Orpington chick girls. They are about 14 weeks old now. We let our next door neighbors know we had chickens and would be free ranging them. One of these neighbors has two dogs which escape from their fenced yard every week or two. Knowing this, our chickens free range when we can be nearby. Several weeks ago one chicken was killed by the dog (only one dog is a hunter). Two days ago, the dog got out and caught one of our chickens (my son caught the dog and stopped him). The chicken survived but most of its tail feathers were torn off and the tail itself is severed from her spine and sort of dangling. Not knowing a lot about chicken anatomy, I am not sure what the bulgy part protruding from her backside is. She has seemed better each day. I am washing her wound with recommended antibacterial cleanser and spraying with another recommended pet remedy. Her wound is very worrisome. I am doing all I can to prevent infection, and she is inside the house in a large container for protection. I am concerned about the tail that is barely attached. Might gangrene develop? Should we remove it? She is drinking, and eating some, and eliminating OK. We have really been enjoying these little chicken girls.