My 91/2 week puppy is displaying behaviour I just don't know how to deal with. She often gets overtired and I am working hard to avoid this situation by playing calmly and we play training games which she likes and she does take lots of regular naps throughout the day. I let her sleep so she is well rested. But sometimes she gets wound up if I am trying to stop her doing something she wants to do. For instance today she was trying to get into an area of the garden that is not suitable for her and no matter how much you try to block her access she will try and try to get in. It becomes almost a battle of wills and then she becomes overtired trying. I try to distract her away but she doesnt want to know and ignores all my attempts. So I pick her up and take her elsewhere and she goes back to try again. When I try to get her away again she becomes snarly and barks and jumps up to bite me. I try ignoring her and turn my back on her to walk away and she just charges at my legs biting my calves. So ignoring her and avoiding eye contact just results in her continuing to behave the way I am trying to avoid. What do you do when it backfires like this?