Giant panda Yang Yang (L) and her cub Fu Hu (meaning lucky tiger) relax in their enclosure on Fu Hu's second birthday at the zoo in Vienna, August 23, 2012. The cub of pandas Yang Yang and Long Hui was born in the zoo on August 23, 2010. Fu Hu's parents were transferred from China to Schoenbrunn Zoo in 2003, and are on loan to Austria by China for a period of 10 years. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: ANIMALS SOCIETY)