Set in a unique school for dogs, the series stars Calvin Millan and his dad, Cesar, interacting with a cast of both real dogs and puppets at a canine school called Mutt and Stuff.Set in a unique school for dogs, the series stars Calvin Millan and his dad, Cesar, interacting with a cast of both real dogs and puppets at a canine school called Mutt and Stuff.Set in a unique school for dogs, the series stars Calvin Millan and his dad, Cesar, interacting with a cast of both real dogs and puppets at a canine school called Mutt and Stuff.