Púca

A horse encountered after dark may be something considerably less cooperative than it appears. In Irish accounts, the púca can carry an unlucky rider across rough country before throwing them off toward morning. Other descriptions give it the form of a bull, goat, eagle, or donkey. Its appearance varies, while its ability to unsettle human lives remains a recurring feature.

The púca appears in Irish folklore collections and local seasonal customs. Alongside stories of alarming encounters, there are warnings about fruit left outside late in the year. Some Halloween traditions held that the púca spoiled wild berries and apples, making them unsuitable to eat. These beliefs are more specific than a general claim that it destroys every crop it encounters.

The púca offers a familiar shape with an uncertain intention. A story can begin with an ordinary animal on a quiet road and become frightening when the animal refuses to behave as it should. Its changing forms leave room for mischief, confusion, and menace.

• W. B. Yeats, Irish Fairy Tales, “The Pooka,” in the classification of solitary fairies.
• National Museum of Ireland, discussion of the púca in traditional Halloween customs.