http://www.dailymail.co.uk/pages/live/articles/news/news.html?in_article_id=409317&in_page_id=1770 "Meet Thumbelina, the World's Smallest Horse,"] Daily Mail, October 8, 2006 In 2010 a 6 pounds miniature horse foal named Einstein challenged Thumbelina for the title of the World's Smallest Horse in part based upon the idea that there should be a separate world record category for the smallest non-dwarf horse. [