Mostly ppd training. Started doing sport/prey type sleeve work 2 years ago. Then added more pressure, different surfaces, vehicle work, street work, and as many different scenarios as I could come up with.
He needs more work on the hidden sleeve, so that's what we are doing now.
He's not a working line GSD, but he has the intensity and focus of one.
The ppd training is mostly out of necessity, (liquor store bussiness)