I have a Germen Shepherd mix that I adopted from a rescue roughly 2 months ago. When I adopted him he needed to be neutered before I got him which was fine, when we took him home he seems to be hacking things up, we took him back and they said he had kennel cough. After all the anti biotics they gave us he seemed to be better. Since then our dog has had a white/yellowish discharge from his penis, it is a small bead normally but seems strange, also the main concern is that he doesn't like to eat, we weened him off purina to Canidae which we heard was a great food, hoping this would help but he still rarely eats, we have to put a topping on it (wet food) for him to even touch it and then he still doesn't eat much, he also is quite lazy around the house, and when he does want to play he gets tired very easy.. also on top of this he drinks constantly throughout the day but always seems to be thirsty and have a somewhat dry throat. We have taken him to a couple different vets and they all say that this is normal behavior but I just don't believe it. Does anyone have any advice?