For a long time we had just Ford & Rebel (black & white labs), but after several years Alex took Ford with him, leaving Rebel at the house, all alone, with no other (dog) companion. That's when Rebel took a fancy to howling (previously, he was always a barker). A year later and he still howls almost daily. Because he's now been our only dog for a while, I thought he needed is own sub-gallery.