My dog is almost 17 years old. He is older than my son. Here's the dilemma: Bull is not really sick. He can't get around and is loosing weight. I feel sorry for him as he can't do what he was able to do when he was younger (I empathize with his situation). But he is getting worse. At what point do you consider it warranted to put a pet down when the animal does not appear to be in pain? On one hand I feel I should have put him down months ago...but on another since he does not appear to be suffering I've waited. I don't want him to suffer, and he is not, but his quality of life is non-existent. I'm planning on talking to the vet and scheduling a time to have him put down (a.k.a. killed) but am wrestling with the decision. I really don't think it is fair to have him suffer through the winter (we will take him inside, but he would have to be carried in and out).....looking for suggestions from those who have gone through the same type of struggle.