The puca (Irish for spirit/ghost), pooka, phouka, phooka, phooca, puca or puka is primarily a creature of Celtic folklore. Considered to be bringers of both good and bad fortune, they could either help or hinder rural and marine communities. The Puca can have dark or staunch white fur or hair. The creatures were said to be shape changers that could take the appearance of horses, goats, cats, dogs, and hares. They may also take a human form, which includes various animal features, such as ears or a tail.