I guess maybe I'm posting this for people who've had similar experiences for any advice. Maybe I'm just posting it to relieve some tension.
I've had a frustrating and depressing last few months with my dog. I have a sheltie, Eddie, who is 11. He's gone from over 40lbs last year down to 23 and is just skin and bones. He simply doesn't eat anymore unless it's some kind of treat. (doritos or pizza crust for example) We've tried every kind of dog food - dry, canned, everything in between.
He's also gone completely blind and gets lost frequently going outside - so much that we have to run outside and grab him before he REALLY gets lost. Let me tell you, in Nebraska in winter, it is no fun running outside in slippers through a field to get your dog.
He's at the vet every month and had lots of tests that all come back ok. The vet thinks he most likely has some sort of cancer that we couldn't do anything about at this point anyway.
But he's still HAPPY. He's not having accidents in the house or anything like that. He did fall down the stairs yesterday because he forgot they were there. I just don't know at what point should be the end? I mean, I hate to let him get down to 10lbs. But if he's seemingly happy, is it fair to put him down?
/sigh


It's never easy to make that choice. 
