Prevalent in Northern English folklore, the Barghest is a monstrous black dog, with fiery eyes, large teeth and claws, though the name has been known to refer to ghosts or household elves in other regions of the country. The word “Ghost” was pronounced “Guest” in Northern England, and the etymology of Barghest is thought to be the combination word, Burh-ghest or “Town-Ghost”. Similar to other mythical Black Dogs like the Black Shuck, Grim, Padfoot, Gwyllgi and Gytrash, the Barghest is believed to be an omen of death, foretelling the passing of an individual by laying on or near their doorstep. In some tales, the dog is but one form the entity can shapeshift into, with other appearances being that of a headless man or woman, a white cat or a rabbit. They are said to attack lone travelers in the countryside as well as the narrow alleys in those of the old English cities.
Pricolici, similar to strigoi (troubled spirits of the dead rising from the grave), are undead souls that have risen from the grave to harm living people. While a strigoi possesses anthropomorphic qualities similar to the ones it had before death, a pricolici always resembles a wolf or a dog. Malicious, violent men are often said to become pricolici after death, in order to continue harming other humans. Sometimes “sin children” (from incest) become pricolici after they die.
Xólotl, the Aztec yellow dog to carry the souls through the first level of Mictlán. There’s a lot of different variations of the myth, but my favorite is the giant dog that literally carries you through the after-life.
sometimes a family is a brooding king of the underworld, his flowery wife (who can and will kick your ass), his adopted goth/death-obsessed son, his best friend/appointed family aunt (who’s definitely not a witch), and their three-headed, monstrous puppy