Tai Shan, the giant panda cub at the Smithsonian's National Zoo, ventures outside for the first time under the close supervision of its mother, Mei Xiang, in this December 2005 file photo in Washington.
Four baby hedgehogs, no older than 24 hours, held in hand at the Gower Bird Hospital, South Wales, UK. Gower Bird Hospital cares for injured and orphaned birds and small mammals until they're ready to be returned to the wild.
Orangutan orphans in Borneo – in pictures 330 orphaned apes are cared for at the Orangutan Care Centre and Quarantine in Borneo, Indonesia. Human surrogate mothers look after the orphaned and rescued orangutans