Horrid, ghostly black dogs terrorize hapless victims in many stories and legends.
Most famously, Sherlock Holmes had to deal with murders seemingly carried out by such a beast in his first tale after Reichenbach Falls. While there are various interpretations of ghostly dogs and Barghests, the legends from Yorkshire and other parts of northern England tell of shapeshifting spirits that usually appear as large black dogs with fiery eyes. These beasts walk about with the sound of rattling chains, and appear near a town when a notable resident was about to die, or had recently died. If one appears upon your threshold, you or someone in your house is about to follow it to the great beyond!