Not enough exercise,completely discount walks,they are not exercise, especially for a younger GSD with energy. I would double the actual exercise and make it the same times every single day. He will get into a routine and settle down as he knows it's coming,if you're inconsistent then all bets are off. My routine is an off leash walk and ball throw at one of the local bogs or parks,choice is dependent on others not being there. We walk the parks while I'm throwing the ball,twice a day,first time is 1-2 hours and second time is 30 minutes. GSDs are now 9 and 5 and have been doing this since 8 weeks old. They know the schedule and patiently wait,they also run errands with me.
Last edited by lrodptl; 05-21-2019 at 08:47 AM.