Cù Sìth

Cù Sìth (Scottish Gaelic: sìthean, pl. sìtheanan, plural Coin-sìth) is a creature of Scottish myth - a hound and harbinger of death. Its name means 'fairy dog' in Gaelic.

Appearance
Said to reach sizes as big as a young bull. Its fur is described as shaggy and dark green (sometimes white) in colour. Its tail is either coiled up or braided and its paws are the same width as a man's hand.

Abilities
It has the ability to carry the soul of a person to the afterlife and when it would howl or bark loudly three times, and if a person were to hear it, they must find safety before the third bark or be overcome with terror to the point of death.

It was also said the baying was a warning to lock up nursing women lest the beast abduct them and take them to a fairy mound to supply milk for the daoine sìth.