Hello, My four month old GSD pup (Liberty) seems to have the common case of the Shepherd nibbles. You pet her she bites. You walk across the house she bites. You put on her leash she bites. Now from some of the things I've read this seems to be normal behavior but sometimes she seems to bite out of aggression. This happens especially when trying to correct her. Example. When she really wants something like food that was dropped on the floor ill try to hold her back but when I grab her she turns and bites my hand. Example 2. We have signed Liberty up for puppy classes at the local petsmart. She was great in class shes really smart knows all the tricks you teach her. When we went to leave she was anxious like she wanted to stay. I picked her up to put her in the car and she snarled and bit me. The same thing happened to my fiancé when putting her in the car. I'm just wondering if this is normal. or if I need to do something drastic. It has gotten to the point where we are very worried about it. I really don't want a full grown GSD doing these types of things and I would hate to have to give her away. Please Help.