If you have a dog, you will most likely outlive it; to get a dog is to open yourself to profound joy and, prospectively, to equally profound sadness.
“Dogs, lives are short, too short, but you know that going in. You know the pain is coming, you're going to lose a dog, and there's going to be great anguish, so you live fully in the moment with her, never fail to share her joy or delight in her innocence, because you can't support the illusion that a dog can be your lifelong companion. There's such beauty in the hard honesty of that, in accepting and giving love while always aware that it comes with an unbearable price. Maybe loving dogs is a way we do penance for all the other illusions we allow ourselves and the mistakes we make because of those illusions.”
― Dean Koontz, The Darkest Evening of the Year