Panda Ultrasound

Following a final ultrasound and hormone analysis, staff at the Smithsonian’s National Zoo confirmed late yesterday (Tuesday, April 27) that female giant panda Mei Xiang (may-SHONG) is not pregnant but was experiencing a pseudo, or false, pregnancy during the past several months.

National Zoo scientists have detected a secondary rise in urinary progesterone in its female giant panda, Mei Xiang. This means that she will either give birth to a cub or experience the end of a pseudopregnancy in 40 to 50 days. Mei Xiang has had five consecutive pseudopregnancies since 2007.