A boy runs in front of a toy bull during the Encierro Txiki (Little Bull Run) on the fourth day of the San Fermin festival in Pamplona July 9, 2013. Nine days of bull running, bullfights, drinking, eating and music, popularized by US author Ernest Hemingway's 1926 novel The Sun Also Rises, attracts hundreds of thousands of visitors from around the world. [Photo/Agencies]