In August, ZooBorns excitedly shared news of the birth of twin Giant Pandas at the Smithsonian National Zoo. The cubs were born on August 22 and the story quickly spread worldwide. Unfortunately, the smaller and weaker of the two cubs died just a few days after birth. Keepers at the National Zoo have continued their diligent care of the remaining cub.
In one of the latest updates from the zoo, keepers reported that, on a recent evening, Mei Xiang decided to eat some sugarcane and drink diluted apple juice left for her. Two hours later, she left the den to urinate and defecate, which was only the second time she had done so since giving birth. Keepers expect that she will become more comfortable leaving her cub in the den for increasingly longer periods of time to eat and drink over the next few weeks.
During these times Mei Xiang is away from the den, veterinarians and keepers often take the opportunity to give the cub quick checkups. On September 5, he weighed 409.6 grams, which was 119 grams more than he weighed on Sept. 2. On September 14, he was up to 881.5 grams (1.9 lbs.). Cubs at this stage usually gain between 40 and 50 grams per day. Veterinarians also listened to his heart and lungs, which all sounded normal.
Scientists at the Smithsonian Conservation Biology Institute's Center for Conservation and Evolutionary Genetics confirmed that the Giant Panda cub born Aug. 22 at the National Zoo is male. A paternity analysis showed that Tian Tian (t-YEN t-YEN) is the cub's father. Scientists also confirmed the deceased cub, delivered by Mei Xiang (may-SHONG), was a male, also sired by Tian Tian. The cubs were fraternal twins.