Awwwww, just look at that mug! What a sweetie! I sure hope the people that bred him get what's coming... So frustrating that even with the amazing care you've given him he still has to struggle w/ illness due to the neglect of his previous owner. Hope the vet figures it out quick so you can enjoy him!
Ah gee, I am so sorry. He is such a sweetie, it's easy to see how you could get attached....I try to maintain a 'clinical' distance with critters that are probably not going to make it, but sometimes it is so hard. Again, I'm sorry for you and the wee one. Above all, I hope against odds that he pulls through and gets past this, but if the dreaded does happen I hope he passes on quietly and without pain. You have a big heart for taking him on and it's obvious he's gotten more love and care than he ever would have in the former situation.