I have a 3 month golden shepherd pup. She's sweet and calm for the most part, but around 9 at night she starts to go crazy and charge me and bite even when I say no. It gets to the point where I'm grabbing her by the back of her neck, pinning her down on her side, closing her jaw shut, and yelling NO. But it seems to just make her more crazy and she isn't scared off by it at all. What should I do? I don't want to trigger something thatll make her aggressive later on.