Five-month-old giant panda cub Fu Hu (meaning lucky tiger) climbs on a tree trunk in its enclosure at the zoo in Vienna, February 8, 2011. The cub of pandas Yang Yang and Long Hui was born on August 23 in the zoo. 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. [Xinhua]