A Fuente Ymbro fighting bull climbs Santo Domingo hill during the fifth running of the bulls at the San Fermin festival in Pamplona July 11, 2011. There were no serious injuries during the run that lasted two minutes and 33 seconds, according to local news sources. REUTERS/Vincent West (SPAIN - Tags: SOCIETY)
Runners sprint alongside a Fuente Ymbro fighting bull at Telefonica corner during the fifth running of the bulls at the San Fermin festival in Pamplona July 11, 2011. There were no serious injuries during the run that lasted two minutes and 33 seconds, according to local news sources. REUTERS/Eloy Alonso (SPAIN - Tags: SOCIETY ANIMALS)
Participants run with Fuente Ymbro's fighting bulls during the fifth San Fermin Festival bull run, on July 11, 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