The BarguestIn English folklore a "Barguest" or "Barquest" is a terrifying spectral hound with "eyes as big as saucers" - a particularly nasty specimen* of which is said to haunt Trollers Gill near Appletreewick in the so called "Barden Triangle" area of Lower Wharfedale in the Yorkshire Dales.
[* = This one's called "Boglittler" by the ravine's notorious and infamously deranged evil bloodsucking gnome.]
The legend of this monstrous black dog is believed by some to have been the inspiration for Sir Arthur Conan Doyle's "Hound of the Baskervilles".
[N.B. Another infamous Yorkshire Barguest is that which is said to haunt the port and coastal resort of Whitby, the legend of which probably served as the inspiration for Dracula's arrival in England in the eponymous gothic novel by Bram Stoker.]