Nature's Variety Raw and Grain Free canned.You might want to start your own thread in this forum. Apart from all of the things mrsgreenjeens mentioned, the first question that comes to mind is, what are you feeding him? But I don't want to take this thread off-topic. Seniors need high protein diets: http://endocrinevet.blogspot.com/2011/11/optimal-protein-requirements-for-older.html