Bull

Members of Vila Franca Xira forcados group perform during a bullfight at Campo Pequeno bullring in Lisbon September 4, 2014. Forcados are traditional Portuguese bullfighters who catch bulls with their bare hands during the festival.

Rafael Marchante/Reuters

Members of Vila Franca Xira forcados group perform during a bullfight at Campo Pequeno bullring in Lisbon. Forcados are traditional Portuguese bullfighters who catch bulls with their bare hands during the festival

Members of Vila Franca forcados group perform during a bullfight at Campo Pequeno bullring in Lisbon

Rafael Marchante/Reuters

Members of Vila Franca forcados group perform during a bullfight at Campo Pequeno bullring in Lisbon. Forcados are traditional Portuguese bullfighters who catch bulls with their bare hands.

Revellers run ahead of ''Jandilla'' fighting bulls

Alvaro Barrientos/AP

Revellers run ahead of ‘Jandilla’ fighting bulls on the way to the bullring, during the running of the bulls at the San Fermin festival in Pamplona, Spain

Portuguese forcados of a group of Lisbon are tossed by a bull as they try to catch it during a traditional Portuguese bullfight at Lisbon's Campo Pequeno bullring, Thursday, July 3, 2014. The forcados are a group of eight men who perform the "pega de cara," or "face catch," in which they challenge a fighting bull bare-handed. The final purpose is to subdue the bull.

Francisco Seco/AP

Portuguese forcados are tossed by a bull as they try to catch it during a traditional Portuguese bullfight at Lisbon‘s Campo Pequeno bullring. The forcados are a group of eight men who perform the “pega de cara”, or “face catch”, in which they challenge a fighting bull barehanded

A bull charges out of an enclosure during a bull-taming sport called Jallikattu in Palamedu, about 434 kilometers (269 miles) south of Chennai, India, Wednesday, Jan. 15, 2014. Jallikattu is an ancient heroic sporting event of the Tamils played during the harvest festival of Pongal.

Arun Sankar K/AP

A bull charges out of an enclosure during a bull-taming sport called Jallikattu in Palamedu, about 434 km south of Chennai, India. Jallikattu is an ancient heroic sporting event of the Tamils played during the harvest festival of Pongal.

A Samburu moran stands next to a fattened black bull in the remote northern Kenya village of Wamba in Samburu November 21, 2013. British High Commissioner to Kenya, Christian Turner, will accept the bull from the Namunyak women's group during a ceremony to bless and celebrate the birth of Britain's Prince George. Prince George is the son of Britain's Prince William and Catherine, the Duchess of Cambridge.

Noor Khamis/Reuters

A Samburu moran stands next to a fattened black bull in the remote northern Kenyan village of Wamba in Samburu. British High Commissioner to Kenya, Christian Turner, will accept the bull from the Namunyak women’s group during a ceremony to bless and celebrate the birth of Britain’s Prince George.

Spanish bullfighters wait for the start of a bullfight during the festivities of San Roque, patron saint, in the village of Penafiel, Spain, Thursday, Aug. 15, 2013. In August hundreds of villages around Spain celebrate their patron saints, with bullfights, music and party on the streets. (AP Photo/Daniel Ochoa de Olza)

Daniel Ochoa de Olza/AP

Matadors wait for the start of a bullfight during the festivities of San Roque, patron saint, in the village of Penafiel, Spain. In August hundreds of villages celebrate their patron saints, with bullfights, music and parties on the streets. Read more

An El Pilar fighting bull gores a runner during the sixth running of the bulls of the San Fermin festival in Pamplona

Susana Vera/Reuters

An El Pilar fighting bull gores a runner on Estafeta Street during the sixth running of the bulls at the San Fermin festival in Pamplona on Friday. Four runners were gored in a run that lasted five minutes, according to local media.

Fiesta De San Fermin Running Of The Bulls

Pablo Blazquez Dominguez/Getty Images

A reveller eludes a bull’s horn at Calle Estafeta during the fourth day of the San Fermin Running of the Bulls festival, on Tuesday in Pamplona, Spain. The annual fiesta, which featured in The Sun also Rises, the 1926 novel by Ernest Hemingway, involves the running of the bulls through the historic heart of Pamplona.

A fighting cow leaps over revellers upon entering the bullring following the first running of the bulls of the San Fermin festival in Pamplona...A fighting cow leaps over revellers upon entering the bullring following the first running of the bulls of the San Fermin festival in Pamplona July 7, 2013. Several runners suffered light injuries in a run that lasted four minutes and six seconds, according to local media.   REUTERS/Joseba Etxaburu (SPAIN - Tags: ANIMALS SOCIETY)

Joseba Etxaburu/Reuters

A fighting cow leaps over revellers upon entering the bullring following the first running of the bulls of the San Fermin festival in Pamplona, Spain, on Sunday. Several runners suffered light injuries in a run that lasted four minutes and six seconds, according to local media Read more