I will never understand how my dog sleeps about 20 hours a day and yet he still yawns! Isn’t he well-rested from all the naps he takes? While I’m jealous of the Zs he gets, I’m glad his sleep-filled days don’t completely rid him of the need to yawn. It’s one of the cutest things a dog can do. Click through for more yawning dogs, cats, ferrets, rabbits, and guinea pigs!