My Peking duck got attacked by our neighbors dog and is pretty hurt. It has a bunch of open sores. It's left leg I think is broke. When I put him in the tub for some water therapy he won't move it but he does the other one. Also he isn't eating. But is drinking and has green poop. I don't know what else to do. It's my best duck and don't know if he will ever walk again. What should I do??