Two four-month-old crocodiles are held by zookeepers before they are weighed during an animal stocktaking at the Hagenbeck Zoo in Hamburg Dec 29, 2010. [Photo/Agencies]

A four-month-old crocodile is held by a zookeeper before it was measured during an animal stocktaking at the Hagenbeck Zoo in Hamburg Dec 29, 2010. [Photo/Agencies]