We took in a pregnant beagle last week from the shelter. It was thought that her puppies would not arrive for at least a couple weeks, so we expected to have time to bond with her before. Surprise, the puppies were born on Saturday. She had been fairly sweet with us as long as we sat down and didn't come at her from above. She was tentative and shy though. Fast forward, now she has 4 day old puppies. When we open the door to the foster room, she charges us barking and snapping. She has bitten me twice on the legs, not deep bites, but enough to draw blood. The visual of this sounds funny, but I am now using a cookie sheet as a shield so as not to get bit. If I can get in there, she will let me sit by them and even pick up the puppies. However, the aggression is getting worse and I am having a tough time even getting her outside to go. Not sure how to handle this. I believe she is a sweet dog, that it is just fear for the puppies. What should I do? And what should my attitude with her be? The shelter is overrun with small, yappy dogs right now and it would not be a good place for her to rear her puppies. Help!