A specialist trader poses with one of the Budweiser Clydesdales on the floor of the New York Stock Exchange before the opening bell in New York March 31, 2011. [Photo/Agencies]

A Sapsal dog performs during a mascot tour to promote the upcoming IAAF World Championships Daegu 2011 in Seoul, April 13, 2011. The championship mascot "Sarbi" is derived from the Sapsal dog, an indigenous canine breed from the region around Daegu, about 300 km (189 miles) southeast of Seoul. The Championships will be held from August 27 to September 4, 2011. [Photo/Agencies]

One of eight penguin chicks makes its way to the ocean after being released by Taronga Zoo staff at Long Reef, Sydney April 13, 2011. Taronga Zoo on Wednesday released eight penguin chicks after their rehabilitation from severe injuries. Most of the penguins were brought to the zoo by locals. [Photo/Agencies]