You always here that dogs are man's best friend, they are loyal, they are true, and they are forgiving. But what they have us beat on hands down is being freaking happy. Here is an animal that has the same reaction to a steak as they do seeing you come out of the bathroom. Now that is downright seeing the sunny side of everything.
The leader of my Buddhist study circle always talks about the key to peace is living in the moment. Animas are way better at it than we are. A dog could just finishes puking, or eating puke, and see a squirrel and get right back into tail wagging. Wow. Our Gurus are everywhere. Sometimes they don't even have opposable thumbs. Kind of hard for them to hold a mala though.