Dog Whistles, what do you think? I have had friends in the past that have used dog whistles to train and teach their dogs right from wrong. When I first was watching this video I thought that something was wrong because I couldn't hear anything but my dog left the room, then as the video continued I started to hear sound. Those first sounds coming from the video must have been hurting my dogs ears. Let us know what you think about dog whistles! Do you think they are helpful? Do you think they are harmful? Let us know!