Gunnar attended beginner training classes at PetSmart last year and there was an incident involving him and an English Bulldog that scared me. Tyson, the bulldog, had an annoying habit of barking and going down on his front legs (don't know if u understand, his front legs down, hiney in the air, instructor said he was challenging the other dogs) and provoking the other dogs. Gunnar even lost his "girlfriend" a 1 1/2 year old great dane because of Tyson's behavior. Belle's mom and dad just couldn't control her and it seemed Tyson constantly goaded her. Anyways, the day the incident happened we were learning meet and greet. You face the other dog/owner and get them to sit. Then on command they are allowed to get up and "greet" the other dog. Then you pull away and walk on. Simple enough, right. Well, Gunnar did great with the other dogs, who ranged from a german shepherd to a furry rat looking thing. haha She was cute as a button!! Anyways, when it was Gunnar and Tyson's turn, Tyson started his crap again. Pardon my french, but he did this all the time to the other dogs. Well, I had Gunnar in his sit, Tyson was barking and Gunnar lunged. I got him back before they ever got too close, but it was VERY upsetting just the same.