Pregnant panda? National Zoo detects possible fetus

Mei Xiang, a giant female panda, rests at the National Zoo in Washington,  Thursday, Oct. 11, 2012. The zoo announced Thursday that the recent death of Mei Xiang's cub was due to liver and lung damage. (AP Photo/Jacquelyn Martin)
Mei Xiang, a giant female panda, rests at the National Zoo in Washington, Thursday, Oct. 11, 2012. The zoo announced Thursday that the recent death of Mei Xiang’s cub was due to liver and lung damage. (AP Photo/Jacquelyn Martin)
(AP Photo/Jacquelyn Martin)
(AP Photo/Jacquelyn Martin)
(AP Photo/Jacquelyn Martin)
(AP Photo/Jacquelyn Martin)
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Mei Xiang, a giant female panda, rests at the National Zoo in Washington,  Thursday, Oct. 11, 2012. The zoo announced Thursday that the recent death of Mei Xiang's cub was due to liver and lung damage. (AP Photo/Jacquelyn Martin)

WASHINGTON — Bao Bao could be getting a baby brother or sister soon.

During an ultrasound Wednesday morning on the female giant panda Mei Xiang, veterinarians detected what they say could be a giant panda fetus, the National Zoo announced.

Based on the size of the fetus, about 4 centimeters, veterinarians estimated Mei Xiang could give birth early next week or in early September, though there is still “a substantial possibility” that she could resorb or miscarry the fetus.

Mei Xiang was artificially inseminated back in April. A DNA test would be needed to determine which of two pandas back in China sired the cub.

The zoo’s panda team has been monitoring Mei Xiang through the zoo’s panda cams.

Lately, zoo officials said, Mei Xiang has been spending more time in her den, body licking and sleeping in more, and cradling toys — all behaviors consistent with a pregnancy.

Scientist confirmed a secondary rise in hormones in July, a signal that she’d either have a cub or experience the end of a pseudopregnancy within 30 to 50 days.

“Today, we are cautiously optimistic,” said Dennis Kelly, director of the National Zoo, in a news release. “We want a healthy cub for all the right conservation reasons. I am excited, but I have to say that we were prepared for a cub even before this morning’s ultrasound. Our expert team of keepers, scientists and veterinarians are going to do exactly what they are trained to do and I’ll just ask everyone to remain positive with us.”

Zoo officials said part of the panda exhibit would be shut down until further notice to give Mei Xiang privacy, though the zoo’s panda cam will still be up and running.

Visitors can still see Mei Xiang’s cub Bao Bao, who turns 2 on Sunday, at outdoor enclosures and on the panda cams. Mei Xiang’s other cub, Tai Shan, was born July 9, 2005, and now lives in China.

Bao Bao was born Aug. 23, 2013 and is expected to go live in China when she turns 4.

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