Veterinarians detected a developing fetus during an ultrasound procedure for Mei Xiang, one of the two adult giant pandas which arrived at the zoo from China on Dec. 6, 2000, the zoo said in a statement.
"Based on the size of the fetus, which is about four centimeters, veterinarians estimate that Mei Xiang could give birth early next week, or possibly in early September," the statement said.
However, the zoo cautioned that "substantial possibility" exists that Mei Xiang could resorb or miscarry a fetus.
Since her introduction to the zoo, Mei Xiang has given birth to two surviving cubs, Tai Shan and Bao Bao. Tai Shan, born on July 9, 2005, now lives in China, and Bao Bao, born on Aug. 23, 2013, will return to China after turning four.
By Ruchi Singh
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