One of my dogs just grabbed one of my hens. She has a large area of torn skin on her upper chest at the base of her neck--no bleeding. I can see some muscle tissue and fat. She is walking around and seems to have no fatal injury, but I separated her and she is now sitting quietly in the coop. The injury looks clean. I put some antibiotic ointment. Should I try and suture the skin or will it heal on its own? What more should I be doing now? What should I look for to let me know that I should take her to a vet?