The zoom zomms crack me up! I don't know how they keep from running in to things and hurting themselves, but they seem to be able to make a split second change of direction in an instant. Kind of scares me sometimes. My dog will go from the top of the sofa, down the hall, on the bed, turn around and back to the top of the sofa then down and around again!
My new little puppy is also exhibiting the aggressive behaviors you are describing. When I scold her she sets back and barks at me. I scolded her the other night and she lunged at me and bit my lip/nose. She is definitely an Alpha personality. But, I have news for her!! I take her and turn her on her back and hold her down for a few seconds and I get right in her face and show her MY teeth when she acts like this. She is getting better but she is strong willed too. I bet it is funny to watch too, LOL, she brings out the animal in me.
__________________ Shelly and the girls Moka Mylee |