Many of us can recognize an image of the great American Pharoah or beloved Zenyatta from a mile away – we’ve watched them race and cheered them on from our couches or bar seats. We grew up playing with the Breyers of Secretariat and Man O’ War. But could you recognize these famous equines by their baby pictures? Take our tough quiz and find out how well you know your favorite racehorses. Share your score in the comments!