I went to Sidney after my wife googled him. Beau, our rescue 5 year old Border Collie X was diagnosed by the shelter as being deaf. Sid after 2 minutes put that theory to bed. We had one dog that had been taught to disregard all noises/sound. As he was misdiagnosed as being deaf, we had no history of any prior training. Sid has now prepared a dog for our family that has good obedience skills and seems a happier dog for it. Thanks Sid!