A runner sprints in front of Fuente Ymbro fighting bulls at the Estafeta corner during the first running of the bulls at the San Fermin festival in Pamplona, northern Spain, July 7, 2016. (Photo by Vincent West/Reuters)





Runners fall in front of Fuente Ymbro fighting bulls near the entrance to the bullring, during the first running of the bulls at the San Fermin festival in Pamplona, northern Spain, July 7, 2016. (Photo by Eloy Alonso/Reuters)





A wild cow jumps over revelers in the bullring after the first running of the bulls at the San Fermin festival in Pamplona, northern Spain, July 7, 2016. (Photo by Eloy Alonso/Reuters)





A reveller is tossed by a wild cow after the first running of the bulls at the San Fermin festival in Pamplona, northern Spain, July 7, 2016. (Photo by Eloy Alonso/Reuters)





A fallen runner is passed by a Cebada Gago fighting bull at the Estafeta corner during the second running of the bulls at the San Fermin festival in Pamplona, northern Spain July 8, 2016. (Photo by Eloy Alonso/Reuters)





A Cebada Gago fighting bull charges runners at the Estafeta corner during the second running of the bulls at the San Fermin festival in Pamplona, northern Spain July 8, 2016. (Photo by Eloy Alonso/Reuters)





A Cebada Gago ranch bull falls next to a runner along Estafeta street during the second running of the bulls at the San Fermin festival in Pamplona, northern Spain July 8, 2016. (Photo by Susana Vera/Reuters)





A runner is caught on the horns of a Cebada Gago fighting bull at the Telefonica corner during the second running of the bulls at the San Fermin festival in Pamplona, northern Spain July 8, 2016. (Photo by Vincent West/Reuters)





Runners try to stay away from a Cebada Gago ranch bull that turned around on Estafeta street during the second running of the bulls at the San Fermin festival in Pamplona, northern Spain July 8, 2016. (Photo by Susana Vera/Reuters)





An assistant helps a “Kiliki”, a Big Head, to dress at the San Fermin festival in Pamplona, northern Spain July 8, 2016. (Photo by Vincent West/Reuters)





A “Kiliki”, a Big Head, finishes dressing, at the San Fermin festival in Pamplona, northern Spain July 8, 2016. (Photo by Vincent West/Reuters)





Assistants help “Kilikis”, Big Heads, to dress at the San Fermin festival in Pamplona, northern Spain July 8, 2016. (Photo by Eloy Alonso/Reuters)





A couple dances at the San Fermin festival in Pamplona, northern Spain July 8, 2016. (Photo by Eloy Alonso/Reuters)





A reveler is chased by a Fuente Ymbro's ranch fighting bull in the 2016 San Fermin fiestas in Pamplona, Spain, Thursday, July 7, 2016. Revelers from around the world turned out here to kick off the festival with a messy party in the Pamplona town square, one day before the first of eight days of the running of the bulls. (Photo by Daniel Ochoa de Olza/AP Photo)





Revellers enjoy the atmosphere during the opening day or “Chupinazo” of the San Fermin Running of the Bulls fiesta on August 6, 2016 in Pamplona, Spain. The annual Fiesta de San Fermin, made famous by the 1926 novel of US writer Ernest Hemmingway entitled “The Sun Also Rises”, involves the daily running of the bulls through the historic heart of Pamplona to the bull ring. (Photo by Pablo Blazquez Dominguez/Getty Images)





Revellers enjoy the atmosphere during the opening day or “Chupinazo” of the San Fermin Running of the Bulls fiesta on August 6, 2016 in Pamplona, Spain. (Photo by Pablo Blazquez Dominguez/Getty Images)





A reveller climbs on to a balcony before the start of Fuente Ymbro's fighting bulls running during the second day of the San Fermin Running of the Bulls festival on July 7, 2016 in Pamplona, Spain. (Photo by Pablo Blazquez Dominguez/Getty Images)





Participants run with fighting bulls during the bull-run of the annual San Fermin Festival in Pamplona, Spain on July 07, 2016. The San Fermin Festival is held annually from 06 to 14 July in commemoration of the city's patron saint. Hundreds of thousands of visitors from all over the world attend Spain's most famous fiesta, the San Fermin bull-running festival. (Photo by Burak Akbulut/Anadolu Agency/Getty Images)





A wild cow jumps over revelers in the bullring after the first running of the bulls at the San Fermin festival in Pamplona, northern Spain, July 7, 2016. (Photo by Eloy Alonso/Reuters)





Runners and Fuente Ymbro fighting bulls take the Estafeta corner during the first running of the bulls at the San Fermin festival in Pamplona, northern Spain, July 7, 2016. (Photo by Vincent West/Reuters)





Revelers drink, during the launch of the “Chupinazo” rocket, to celebrate the official opening of the 2016 San Fermin Fiestas, in Pamplona, northern Spain, Wednesday, July 6, 2016. Revelers from around the world kick off the festival with a messy party in the Pamplona town square, one day before the first of eight days of the running of the bulls. (Photo by Alvaro Barrientos/AP Photo)





A woman drinks before the Riau-Riau procession of the San Fermin Festival on July 6, 2016 in Pamplona. The Riau-Riau is a procession held on 6 July in which members of the city council parade from the City Hall to a nearby chapel dedicated to Saint Fermin, on July 6, 2016. (Photo by Pedro Armestre/AFP Photo)





Revelers go on the way of the Estafeta street beside Fuente Ymbro fighting bulls as people look on from balconies during the first running of the bulls at the San Fermin Festival, in Pamplona, norther Spain, Thursday, July 7, 2016. Revelers from around the world arrive to Pamplona every year to take part in some of the eight days of the running of the bulls. (Photo by Alvaro Barrientos/AP Photo)





A reveler is charged by a cow in the bullring during a daily amusement event after the running of the bulls of 2016 San Fermin fiestas in Pamplona, Spain, Thursday, July 7, 2016. Revelers from around the world arrive to Pamplona every year to take part in some of the eight days of the running of the bulls. (Photo by Daniel Ochoa de Olza/AP Photo)





A Cebada Gago's ranch fighting bull chase revelers during the running of the bulls in Pamplona, Spain, Friday, July 8, 2016. A hospital official says five people were gored by fighting bulls in a hair-raising second running of the bulls at Pamplona's San Fermin festival. Several of the six bulls used in the run Friday got separated from the pack and began charging whatever came in sight, creating many moments of fear and tension. (Photo by Daniel Ochoa de Olza/AP Photo/ANSA)





A reveler is gored by a Cebada Gago's ranch fighting bull during the running of the bulls in Pamplona, Spain, Friday, July 8, 2016. (Photo by Daniel Ochoa de Olza/AP Photo/ANSA)