A dog runs down a small hill on snow with its front paws on a sled. It carries the sled back up the hill and goes down again.
A large dog bites at a small dog in a hot dog costume indoors.
A puppy dog pushes a Chihuahua dog off of the couch he is sitting on indoors.
A puppy dog chases its leash, that it is attached to, around an ottoman indoors.