Twin pandas look forward to growth spurts

DNA tests needed to tell whether cubs have same father

TWICE AS NICE  Mei Lun and Mei Huan (shown here at about two months old) are the only surviving panda twins born in the United States. These twins, born at Zoo Atlanta, recently celebrated their 2nd birthday.

Courtesy of Zoo Atlanta

Update: On August 26, the National Zoo reported that the smaller of the twin panda cubs born to Mei Xiang had died.