WASHINGTON, June 24 (UPI) -- Scientists at the U.S. National Zoo say it might be mid- or late July before they can definitely determine if giant panda Mei Xian is pregnant.
Veterinarians at the Smithsonian's zoo said last week's urinary progestin test indicates it might yet be a month before Mei Xiang gives birth to a cub or comes to the end of a false pregnancy, which is common in giant pandas.