What a nice thought. One of my favorites:
Not the least hard thing bear when they go from us, these quiet friends, is that they carry away with them so many years of our own lives. Yet, if they find warmth therein, who would grudge them those years that they have so guarded? Nothing else of us can they take to lie upon with outstretched paws and chin pressed to the ground; and, whatever they take, be sure they have deserved. - John Galsworthy, Old Dogs Remembered