RIP Milky Wave
Despite our best efforts, we just couldn't figure out what was wrong, and he passed away last night. The vet even did an autopsy today, and aside from knowing that he died of liver failure (due to lack of eating) she couldn't figure out why he'd stopped eating.
I'd been giving him fluids and even force feeding him, but it wasn't addressing the (unknown) underlying problem. He didn't seem to be in pain, and died quite peacefully. I really feel that every moment we'd had with him was pretty much on 'borrowed time', and we were grateful for all of it.
He'd cheated death more than once in the two years we'd had him. Frostbite, seizures, drowning and getting lost for two days in our heating ducts. God only knows how many close calls he'd had before we found him!
Mr. Moo, you will be sorely missed.
If you'd like the whole story, just click on the Milky Wave tag.
Thanks so much for everyone for you kind words and crossed fingers. And thanks again for the bunch of you who stepped up to help him out the first time around. <3