I am seriously going out of my mind...Raika has been a nightmare this morning. She is barking, getting up on the couch, biting, scratching, trying to get the cat, aaah!!! Every time I try to discipline her she barks and nips at me like I'm playing with her. I've been trying to establish dominance with her and I feel like she is walking all over me. She doesn't cower at all when I yell or punish her. She's like an out of control teenager!!!! I feel like when I try to punish her (and by punish I mean scolding, holding her mouth shut when she bites, etc), she's like 'haha, you think THAT'S gonna stop me'? I feel like she needs something more dramatic, but I don't know what to do!!!