Runners sprint ahead of Nunez del Cuvillo fighting bulls at the entrance to the bullring during the last running of the bulls at the San Fermin festival in Pamplona July 14, 2011. No serious injuries were reported in a run that lasted two minutes and 20 seconds, according to local news sources. REUTERS/Joseba Etxaburu (SPAIN - Tags: SOCIETY ANIMALS)
Runners lead Nunez del Cuvillo fighting bulls along Estafeta street during the last running of the bulls at the San Fermin festival in Pamplona July 14, 2011. There were no serious injuries during the run that lasted two minutes and 20 seconds, according to local news sources. REUTERS/Susana Vera (SPAIN - Tags: SOCIETY ANIMALS)
Participants run with a Nunez del Cuvillo's fighting bull during the eighth San Fermin Festival bull run, on July 14, 2011, in Pamplona, northern Spain. The festival is a symbol of Spanish culture that attracts thousands of tourists to watch the bull runs despite heavy condemnation from animal rights groups. AFP PHOTO / JAVIER SORIANO