So looking into getting my first GSD and about 99% sure i'm going with one of the local GSD rescue groups in the area as there are some very good ones it seems. My question is without knowing the parents of the pooch how soon or how can you spot if a pup is a working line or show line GSD? I know what the adults look like but what age typically is it able to be noticed? I ask because i would really prefer a working line for a couple reason but going with a rescue group has me a little concerned in this area. I've gotten 2 of my last dogs from Rescues and have all been great but never a GSD. Your help is appreciated!!