WASHINGTON, Jan. 11 (UPI) -- The female panda at Washington's National Zoo was artificially inseminated during the weekend when she entered her once-a-year heat, officials said.
Mei Xian entered her 48-hour annual heat Saturday, but failed in attempts to mate with Tian Tian. Both pandas then were sedated and sperm from Tian Tian injected into Mei Xian, The Washington Post reported Monday.