I don't know beans about dogs since I havent owned one since I was 11 - but when I see these dogs howl when someone sings to them or bark when music is played - are they really enjoying it or does it hurt their ears? I used to live right by a fire station and when the whistle went off all the dogs in the neighborhood would howl - I suspected that was hurting their ears. Don't high pitched sounds usually hurt a dog's ears since their hearing is so keen?