This is a pretty comical thread.. My Suzi is nearing three years old , and she is the crazy, hyperactive, silly , one. Now I wondered the same thing, just when is she going to grow up? She is also very smart too. Suzi is the ring leader, and has taught the other two so much. For example, Tonight i ran a quick errand. We live upstairs in a apartment home. Suzi has alwways looked out our big side window through the blinds, waiting , and watching for us. Tonight , we had a surprise. Not only was Suzi looking, so was our baby yorkie ! 2 tiny little heads looking out the window. Sometimes it is very good to have such an active yorkie. They keep us on our toes