Barking when he hears children's voices and worse when he sees them Yesterday my wife and I went to Long Island from CT to pick up our purebred Yorkshire Terrier from a shelter he is a rescue dog that came from Manhattan everything with him is fine fine with other dogs ,adults and seems to have some behavior training,BUT today when he heard children's voices he started barking uncontrolably so I took him out to meet our children neighbors and the barking was insane can anyone give us some advice he is 2 yrs old maybe he never saw kids before I don't because other than that he is quiet and just great any ADVICE PLEASE |