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Perros en el mundo

Miguel Brindisi, head coach of Mexico's Atlas, watches a dog during a training session at Velez Sarsfield stadium in Buenos Aires, May 13, 2008, ahead of their Copa Libertadores quarter-final soccer match against Argentina's Boca Juniors on May 14. REUTERS/Marcos Brindicci (ARGENTINA)

Reuters

Miguel Brindisi, head coach of Mexico's Atlas, holds a dog during a training session at Velez Sarsfield stadium in Buenos Aires, May 13, 2008, ahead of their Copa Libertadores quarter-final soccer match against Argentina's Boca Juniors on May 14. REUTERS/Marcos Brindicci (ARGENTINA)

Reuters

Miguel Brindisi, head coach of Mexico's Atlas, plays with a dog during a training session at Velez Sarsfield stadium in Buenos Aires, May 13, 2008, ahead of their Copa Libertadores quarter-final soccer match against Boca Juniors on May 14. REUTERS/Marcos Brindicci (ARGENTINA)

Reuters

indian officials with a sniffer dog make a security check at Chandpoll, one of the sites of a series of bomb blasts which tore through crowded markets in the northwestern Indian city of Jaipur on May 13, 2008. A series of seven bombs tore through crowded markets in the Indian tourist city of Jaipur late on May 13, killing at least 60 people and wounding 150 in what police said was a terror attack. AFP PHOTO/ STR (Photo credit should read STRDEL/AFP/Getty Images)

AFP/Getty Images

A man walks his dog on the Henderson Waves, Southeast Asia's longest and highest pedestrian bridge, at dusk in Singapore May 13, 2008. At 36m (118 feet) above Henderson Road and 300m (984 feet) long, it connects the two hills of Mount Faber and Telok Blangah Hill. REUTERS/Tim Chong (SINGAPORE)

Reuters

DUJIANGYAN, CHINA - MAY 13: A dog waits for its master on a street on May 13, 2008 in Dujiangyan, Sichuan province, southwest China. A major earthquake measuring 7.8 on the Richter scale jolted Wenchuan County of southwest China's Sichuan Province May 12, killing at least 10,000 people. The death toll is expected to rise as there is no definite estimate of the number of people trapped under mounds of concrete. (Photo by Guang Niu/Getty Images)

Getty Images

Protesters and their dogs participate in an animal rights rally in front of the Romanian Parliament in Bucharest May 13, 2008. Animal rights activists gathered on Tuesday to back up a new law that is being debated in parliament to make sheltering, sterilizing and registering of stray animals mandatory. REUTERS/Mihai Barbu (ROMANIA)

Reuters

A boy holds a poster of a dog during an animal rights rally in front of the Romanian Parliament in Bucharest May 13, 2008. Animal rights activists gathered on Tuesday to back up a new law that is being debated in parliament to make sheltering, sterilizing and registering of stray animals mandatory. REUTERS/Mihai Barbu (ROMANIA)

Reuters

Members of a forensic team arrive with a sniffer dog at the house of Josef Fritzl in Amstetten, Austria, Tuesday, May 13, 2008. Authorities say Fritzl confessed to locking up his daughter and repeatedly raping her. Investigators say he also told them three of the children were raised in a cellar at his home in Amstetten, Austria, three others were brought up above ground, and one died in infancy. DNA tests have confirmed Fritzl is the biological father of the six surviving children. (AP Photo/Ronald Zak)

AP

Chemotherapy is administered at the Veterinary Teaching Hospital at Washington State University Dec. 19, 2007 in Pullman, Wash. (AP Photo/Seattle Post-Intelligencer/Andy Rogers)

AP