In Welsh mythology and folklore, Cŵn Annwn were the spectral hounds of Annwn, the otherworld of Welsh myth. They were associated with a form of the Wild Hunt, presided over by Arawn, king of Annwn. They are often depicted as white with red ears.
West Highland White Terrier by Pijus Vyčas, via Flickr Don't know if he's overseeing the work or surveying his kingdom! Black and White