I haven't read the other threads, but here is what I would do---and you folks know that I love dogs---I have four---two of which are rescues, and I help transport rescued dogs to get to therir new homes. gatiger---I would do whatever I could to make the doggy as comfortable as long as I could. I would also make sure that it had as normal of a life for as long as I could--whatever it takes. But, the issue then becomes what next...I have had to put two dogs down, and my Jeb, who is 11, may be going to the Rainbow bridge in the next six months or so. When the dog's quality of life ceases to be normal, and as soon as the dog's is in uncontrollabe pain, it is time to do the UNSELFISH ACTION. Why don't we have the dog PTS sooner---because we are, at times, selfish---we want to spend more time with the pet---we love them. The reality of it is, if we really love them (and we do) we need to recognize the hard facts that the dog's life is now in a downward spiral, and, since we love them, we have to do what is necessary (but painful to us) to eliminate the dog's pain. I wept unctrollably in front of my students the days the I had to put down Sandy and then Maggy---but I knew in my heart that I did the right thing. They are waiting for me now and the Rainbow Bridge; someday we will be together and we will play together again.