I have a German rottweiler name five-o that don’t play good with others. Walking him in a park and/or on a leash was one of the hardest thing to do. He have an attitude problem when other dogs are around. It becomes a game of tug-a-war when it comes down to the leash. I felt like I was hurting him by the way I was trying to contain him. Well after six sessions from Mr. Collins I’m now aware of how to walk five-0 on a leash and how to correct his behavior around other dogs. Now I feel comfortable getting my son a puppy of his own to grow up with.