The Gwyllgi finds its counterpart in the Mauthe Doog of the Isle of Man and the Shock of the Norfolk coast. It there comes up out of the sea and travels about in the lanes at night. To meet it is a sign of trouble and death. The Gwyllgi also is confined to sea-coast parishes mainly, and although not classed among death-omens, to look on it is deemed dangerous. The hunting dogs, Cwn Annwn, or dogs of hell, whose habitat is the sky overhead, have also other attributes which distinguish them clearly from the Gwyllgi. They are death-omens, ancient of lineage and still encountered. The Gwyllgi, while suggesting some interesting comparisons with the old mythology, appears to have lost vogue since smuggling ceased to be profitable.