The vet said two years ago that he had only a few weeks due to an enlarged heart, he went bad ways after his life-time co-dog, Barney, passed away suddenly. Buster had always wanted to be TopDog and now Barney was gone, he could be, but, y'know, you don't miss your water, 'til your well runs dry and Buster got what he wanted, but he lost what he had and he lives quietly now, TopDog, alone. I took him, recently, to where, six hundred miles away and fifteen years ago, he used to walk as a pup; he wasn't impressed and he was glad to be back in his walled garden, on his sofa, in any of his half-dozen beds.
Anybody who can look in dog's eyes and not see his own swift passing there mirrored misses dog's purpose, and ours.