Ok dog people? I need your help again!!?

Well I usually introduce them in the back yard. I take the older dogs outside, and then bring the new puppy in case any one pees it is outside. Little puppies don't know they are little. Sometimes big dogs are afraid of the new puppy. My shelties are afraid of our new cavie puppy because she has baby teeth, and she thinks because they are big, they have snacks, so she is trying to bite the big dogs all the time. It is a slow process and it just takes time. I expect them to work things out for themselve, but if it gets too rough, you have to step in. You have to correct the one in trouble, and you have to be fair and really correct the one that is in trouble, even if it is the puppy. I point at the one in trouble, snap my fingers, and use a command like "shame" "ssht", "off" "stop" "behave" "settle down" whatever your puppies respond to. When they behave I say "good girl/boy" remember to praise when they do the right behavior. I don't know a lot about labs, my mom had one when she lived in England, so I don't know if Hershey would hurt the little puppy or not. I think you are going to have to supervise any play time they have together. Well anyway you have to supervise the little puppy at this stage anyway, so Hershey won't be alone with the puppy. It is possible that Hershey might be a little afraid of the new puppy. You have to let them work things out for themselves, but if they get rough, then you have to step in and correct the wrong behavior, and let them know they are each others pack now. I had a ferret that would play with my sheltie, and if the sheltie got too rough, the ferret would pull the shelties hair by his ears. So once the sheltie did something wrong, and he just started crying so the ferret wouldn't pull his hair. My mom used to have a great dane, and a little dog someone dumped on her farm, and they learned to get along. You just have to teach them that they are a pack, even though they are different sizes. My male dog is great with puppies, he is so gentle. Don't forget to update us on your nasty neighbor problem.