The "running of the bulls" involves running in front of bulls that have been let loose down a city street. The most famous running of the bulls takes place each July in Pamplona, Spain, during the annual San Fermin festival.

At the 2008 San Fermin festival, 13 people were injured during the first running of the bulls on July 7th. The most critically injured competitor left with fractured ribs and a ruptured spleen.Fox News: First Day of Pamplona's Running of the Bulls Leaves 13 Hurt (July 7, 2008) Five additional participants were injured on the second day of the festival, July 8th.Houston Chronicle: Spaniard Gored in Second Day of Running of the Bulls (July 8, 2008)

In 2009, Daniel Jimeno Romero, a 27 year old from Madrid, became the 15th person to die at the event since it began in 1922.http://news.bbc.co.uk/2/hi/europe/8143744.stm

The San Fermin Festival is held in Pamplona, Spain, beginning on July 6th each year. The festival begins with music and dancing, then the first of several bull runs takes place on the morning of July 7th. A total of eight runs are scheduled over the nine-day event. Streets are cordoned off prior to each run. A typical run consists of several hundred people running from six bulls over a roughly half-mile course. Each run typically lasts three minutes.

• Flickr: Running of the Bulls

• {{slideshow}}

• Los Angeles Times: 2008 Los San Fermines Festival in Pamplona, Spain Photo Gallery

• Detroit Free Press: Photo Gallery: 2008 Running of the Bulls

• Google Image Search: Running of the Bulls

• BBC NEWS: In pictures: Pamplona's bull run

• 2Camels.com: Running of the Bulls Photos

• Yahoo! Image Search: Running of the Bulls