Veterinarian Fernando Riera, director of Dona Pilar Embriones, shows a pocket containing semen from a Polo Argentino stud horse at Dona Pilar farm in Lincoln some 310 Km, West of Buenos Aires, on ... more 
Veterinarian Fernando Riera, director of Dona Pilar Embriones, shows a pocket containing semen from a Polo Argentino stud horse at Dona Pilar farm in Lincoln some 310 Km, West of Buenos Aires, on February 9, 2011. AFP PHOTO / JUAN MABROMATA (Photo credit should read JUAN MABROMATA/AFP/Getty Images) less 
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Getty Images | Photo By JUAN MABROMATA / AFP/Getty Images
Wed, Mar 30, 2011 10:44 AM EDT