Ozzy, my 18 month old GSD, training for IPO (Schutzhund). Tracking, Obedience and Protection. This guy is hard as nails so I spent a full year working on our bond before getting into protection work. I did too good of a job because he has separation anxiety, a little. Vid 1: clear sign of being unsure, looks to me. Vid 2: same deal when commanded to release bite. Vid 3: Back to the ball to build confidence. Vid 4: He doesn't care about me.....*sniff.