So many owners, or to be more precise, their neighbors, find excessive barking to be an intolerable problem when dogs are left at home alone. But also, many owners find excessive and uncontrollable barking to be a problem even when they are at home with their dogs. The solution is simple. Teach the dog to shush on cue. This may sound OK in theory but many owners experience huge problems trying to put theory into practice, largely because they try to teach the dog to shush when he is amped up…