At just a hair over 17 inches tall, the miniature horse is more inclined to walk under fences than jump them. And her owners have sheltered the mare from ever gaining ‘circus-sideshow’ or ‘one-trick-pony’ status. As the world’s smallest horse, five-year-old Thumbelina, weighing in at 57 pounds, has a bigger mission: to raise $1 million for children’s charities this year.

In the months after being named ‘World’s Smallest Living Horse’ by Guinness World Records last summer, Thumbelina has certainly not been short on attention. The tiny horse and her charitable foundation have helped raise about $10,000 for children’s charities since she gained World record status as the smallest horse ever recorded, at 17 1/2 inches at the withers.