WASHINGTON, Aug. 13 (UPI) -- Mei Xiang, a giant panda at the Smithsonian's National Zoo in Washington, won't be giving birth to a cub this year as initially thought, zoo staff say.
National Zoo staff said in a news release that while the female panda's declining urinary progesterone levels this July indicated a possible pregnancy, it appears the animal lost the developing fetus or has experienced a pseudo-pregnancy.