K9 pack leader was awesome. We had a high strung German Shepard dog who was super friendly but had a barking and pulling problem that made him seem like Kujo. Me and my wife were lucky however and we knew that WE were the problem and not our dog. Bob helped train US to become the Alpha in the house which then settled our dog down as he was no longer required to fill a role he didn’t need to. Bob won’t come and fix your dog but he will teach you what you need to fix your relationship with your dog.