Horse racing rare sport where males and females compete against each other . Not just jockeys -- but horses . Comment: More winning male horses than females , seen as taller , stronger , faster . That said , one of the most remarkable champions the racing world has ever seen also retired last year -- a female thoroughbred called Black Caviar . Aussie champion Black Caviar , best female thoroughbred in history .
Horse racing rare sport where males and females compete against each other . Not just jockeys -- but horses . Comment: More winning male horses than females , seen as taller , stronger , faster . Aussie champion Black Caviar , best female thoroughbred in history .