what are nargles harry potter

Nargles are magical creatures mentioned in the Harry Potter series. They are associated with mistletoe and are believed to be mischievous and thieving creatures. Luna Lovegood is the only character in the series known to believe in their existence, and she describes them as creatures that live in mistletoe and are responsible for causing mischief and stealing items like shoes. However, their existence in the wizarding world is left ambiguous, and it is unclear whether they actually exist or are purely a product of Luna Lovegoods imagination.