One of the most famous mentions of the Pukwudgie comes in Henry Wadsworth Longfellow's epic Song of Hiawatha. In one of the chapters of the poem, Wadsworth retells the story of Pukwudgies' infamous jealousy and mentions a plot by the creatures to murder the legendary figure, Kwasind.
But it wasn't until Pukwudgies entered Harry Potter lore that people around the world wanted to know more about the little creatures. Harry Potter author J.K. Rowling chose Pukwudgie as one of the house names for the school, naming each house for a Native American creature of legend.
Wizarding World, the official Harry Potter site, says Pukwudgie House favors healers and represents the heart of wizards. In Rowling's telling of the founding of Ilvermorny, a Pukwudgie protected co-founder Isolt Sayre from death. As such, Pukwudgies remain in Ilvermony, and work to secure and maintain the school.
Pukwudgies have rightly fascinated us for centuries, and continue to do so. Just don't get too fascinated and let them lead you off of a cliff.