Revellers celebrate the start of the San Fermin festival in Pamplona on July 6, 2013. The annual San Fermin festival, famous for the running of the bulls event, started on Saturday and runs until July 14. [Photo/Agencies]

A steer tries to get through a crowd of runners at the entrance to the bull ring during the first running of the bulls of the San Fermin festival in Pamplona, Spain on July 7, 2013. Several runners suffered light injuries in a run that lasted four minutes and six seconds, according to local media. [Photo/Agencies]