answer:I am sorry you have this problem. It is so difficult to see our dogs age. If he is really incontinent, you might consider keeping him in a room with an easy floor to clean most of the time. That will make it less frustrating. Also, is there any possibility of a doggie door in your house; although he may not have time to make it out. It does seem like he might be becoming demented from the other symptoms but perhaps there is something physiological going on. We had to put my dog to sleep when he was 14 because he had congestive heart failure and a mass in his stomach. It was hard but there was no question it was the right thing to do. Another friend kept his dog alive until she died naturally. You are your vet will know when it is time; it is a very personal decision. I will say when I saw how peaceful the process was, I regretted that we don’t allow it for suffering humans. I personally don’t believe in letting animals suffer for our own comfort; on the other hand, I don’t believe in killing them for our convenience.