'Your papers, please' must never be heard in America

The giant panda cub that died last month did not survive because of underdeveloped lungs and liver damage, National Zoo officials said Thursday.

How do you break the news to your little ones? Not even a full week after the National Zoo's baby panda cub was born, the little critter passed away, leaving in its wake a sea of grieving young children saddened and confused by the loss.

The week-old giant panda cub that died at the National Zoo had a hard, discolored liver, and fluid floating freely in its abdomen, officials said Monday, conditions that might have contributed to its sudden death — but the exact cause can't be confirmed for several weeks.

Staff at the Smithsonian National Zoo were mourning Sunday as they announced the unexpected death of the giant panda cub born a week earlier.

A giant panda cub born last weekend at the National Zoo in Washington has died.
The birth of a panda cub this weekend at Washington's zoo was cause for a party, but behind the excitement there's also some nail-biting.

A female giant panda at the Smithsonian Institution's National Zoo is a mother for the second time, giving birth to a cub.
A giant panda at the Smithsonian's National Zoo is a mother for the second time, giving birth to a cub after years of failed pregnancies.

A baby panda born Sunday night at the Smithsonian National Zoo delighted zoo officials, biologists and visitors to the park on Monday.
A giant panda at Washington's zoo surprised scientists and zookeepers by becoming a mom again after years of failed pregnancies.
Veterinarians at the National Zoo conducted their first ultrasound examination Tuesday on the female giant panda Mei Xiang but can't yet determine whether she is pregnant after changes in her behavior.
The National Zoo says it's watching its female giant panda Mei Xiang closely for a possible pregnancy.
Giant panda Mei Xiang kept people guessing for months, but National Zoo veterinarians determined Friday that she had failed to become pregnant for the fifth year in a row even after a Chinese breeding expert tried to help her conceive.

Round-the-clock surveillance, spacious accommodations and a team of specialists available at a moment's notice, all for a potential panda no bigger than a stick of butter.

Chinese officials say they have reached an agreement with the National Zoo to keep a pair of giant pandas in Washington five more years.