Hi, at what age does a GSD pup start showing their place in dog ranking or so called the pack. Latley my 9 mo pup has started showing dominet behavior to my 3 yr old docile as it gets lab and to our other small yound dog as well. She has not changed around the kids at all. She usually tends to be the submissive dog who backs down from everything. I am starting to be confused by her.