Hi guys, just need some advice. I have an 8.5 week old buck fawn who has had a poor appetite for the last couple of weeks. He looks groggy and disinterested in the bottle etc (lethargic). I've just noticed in the last 3 or 4 days that he is coughing a bit after he has a bottle. He also coughs sometimes while just walking around. I'm wondering if its pneumonia. My vet gave me sulvit powder to mix with water to treat for it, but he refuses to take it. I've syringed as much as I can down his throat, but it doesn't seem to be helping. Should I start him on penicillin? It's hard for me to get access to drugs, but I have penicillin on hand. His breathing also looks labored most of the time. He's just acting weird....no energy, only eating about half of what he should. Any ideas would be appreciated.