Czech Republic's Tomas Berdych returns the ball to Argentina's Carlos Berlocq during the Davis Cup semifinals tennis match in Buenos Aires, Argentina on Sunday, Sept. 16, 2012. (AP Photo/Eduardo Di Baia)
Czech Republic's Tomas Berdych returns the ball to Argentina's Carlos Berlocq during the Davis Cup semifinals tennis match in Buenos Aires, Argentina on Sunday, Sept. 16, 2012. (AP Photo/Eduardo Di Baia)
Sofia carries one of her three lion cubs during their presentation to the public at the city zoo in Buenos Aires, Argentina, Wednesday Jan. 5, 2011. According to zoo officials these are the first white lions to be born in South America. The cubs were born on Nov. 16, 2010. (AP Photo/Eduardo Di Baia)
Children look at a white lion cub as it is shown for the first time to visitors at the city zoo in Buenos Aires, Argentina, Wednesday Jan. 5, 2011. Three white lions, one male and two females, were born on Nov. 16, 2010. According to zoo officials these are the first white lions to be born in South America. (AP Photo/Eduardo Di Baia)
