“I have sometimes thought of the final cause of dogs having such short lives and I am quite satisfied it is in compassion to the human race; for if we suffer so much in losing a dog after an acquaintance of ten or twelve years, what would it be if they were to live double that time? The misery of keeping a dog is his dying so soon. But, to be sure, if he lived for fifty years and then died, what would become of me?” 

– Sir Walter Scott