He is better than all other dogs. He runs around the floor and makes funny noises. None of his noises really sound like a dog's noise. Sometimes he sounds like an old car, at others he is a robot. 

Denis always seems to complain when I turn him off. I don't think he wants to stop playing around and making strange noises, but everyone else in the house wants him to. He is a bit more than noisy. 

One good thing about Denis is that he does not need feeding and will go days without attention and then when you want to play with him again he is willing to go have fun again.