Trainer lady told little girl that my wagging tail doesn't mean I'm happy, it means I'm excited. That is important because, well, I'm a puppy and when I get too excited I want to play. I want to jump up and wrestle and have a great big puppy romp. Dad and mom don't want little girl to get hurt so she cannot be alone with me right now. Trainer lady will teach little girl how to be calm and how to play safely with me. The people don't want me to pull her shirt or coat either. She is a human pup so I don't really understand, but that's the rules.