That's wonderful. We started puppy classes yesterday. The most important things we learned were: 1. never use their name when giving a command otherwise they will learn that their name means "treat" and you want them to associate action with treat; and 2. you need to do a "dominance hold" on them often when they are puppies. A dominance hold is when you pin the puppy either on the floor, or against your body, until he/she stops struggling. Wait a few seconds and then release the dog. You should not use force to pin the dog, but gentle pressure. Has anyone else heard of this? I can say we've done it a few times since yesterday and our puppy hasn't bitten any of us once since.