I know exactly what you mean. When my two dogs start playing, there's no stopping them. They are both 80 pounds and sometimes I think they are going to break something. It's always fun to watch, until you see a little two footer walking in the room and one of the dogs knocking them over. One time the dogs were playing and my little girl who was two or three at the time came walking through the kitchen. Dakota was running at full speed and tried to jump over her. He caught her head with his foot. He almost cleared her. Well, of course, she went flying backwards. She was not a happy camper!!!!! The dogs, of course, were oblivious to what had just happened. They kept right on playing.