been trying really hard to train her, she is so super hyper when she is out of her pen. she lunges at your face when your holding her and licks but she also nips too. when she's out and im walking through the room she gets ahead of me and walks backward and grrr's and sometimes barks at me feet and nips my toes. last night i kept the penny can in my hand and when she did it i'd shake the can. it makes the kids and i a little nervous to play with her because no one wants their nose nipped. what else can i try? i use the penny can when she nips and i say 'no bite'. in a stern voice. is this typical behavior?