The reindeer who was the inspiration for the fictional character of "Dasher" in the classic poem "A Visit From St. Nicholas" was a real reindeer named "Donner" who lived at the North Pole. The name "Donner" was later changed to "Dasher" to make the poem flow more smoothly. Donner was a member of Santa's reindeer team and was known for his speed and agility. He is said to have been one of the first reindeer to pull Santa's sleigh and is often depicted as the lead reindeer in popular Christmas imagery.