A koala joey hangs on a toy koala during a weighing procedure at the zoo in the western German city of Duisburg June 11, 2010. The 215 day-old Koala baby, which weighs 215 grams, has yet to be named. [Agencies]

A koala joey hangs on its mother Goonderrah, the Aboriginal name for fighter, following a weighing procedure at the zoo in the western German city of Duisburg June 11, 2010. The 215 day-old koala baby, weighing 528 grams, has yet to be named. [Agencies]