I hate to have to ask this question but I have to at some point and now is probably a good time. My oldest Pit Bull is about 11.5 years old, he has really began to show signs of growning old and just today I realized that its probably close to the time where I am going to have to put him down. But at the same time I dont want to just the gun...honestly I have no clue where I am at so I have to ask. He craps in the house at least once a week now, he is obviously losing control of his bowels..today I was playing with him and he bit me with all he had, this was a clear sign that he is really losing it. I have to help him into the car when we go somewhere by lifting his back end up, when he hops on the sofa he is clearly struggling to do so. There are alot more small signs but I dont want to try and remeber everything right now...all I know is he is clearly not nearly what he used to be. He still has a strong appetite but is that enough? Help me out here guys, when is it time to put my dog down...obviosly Id like him to stay as long as possible but there is no point in making him live if he is suffering. How do I know for sure its time?