We've been bringing Brody to his puppy socialization class every weekend since we've had him at 8 weeks. He's now just over 5 months. The trainer that is there is always commenting on how easy going, playful and sweet he is. If another dog is too rough with him, he sits there and takes it. He does bark back after a while...I think he has an extremely long fuse lol. He's so happy all the time and just wants to play with eveyone. He's not skiddish by any means but doesnt really assert his power yet. Do you think as he gets older, he'll start being more assertive? She said usually around 8 months she notices GSD's start asserting their power. Every dog he comes into contact with he just wants to play! He's never been cautious with people either. He's only barked once at another person at night while we were walking. Just wanting to see when everyone elses dogs got out of the playful puppy mode. I'd rather him be friendly and outgoing like he is then have dog aggression issues so I'm not complaining by any means!