Mao Mao (毛毛, studbook #504) was born in 1999 in the wild in Beichuan County (北川县), Sichuan Province. No exact birth date was recorded for wild-born cubs of that period — January 1, 1999 is used here purely as a timeline placeholder, and her actual birth date in that year is unknown.
She would be rescued the following year, in April 2000, and go on to raise three cubs at the China Conservation and Research Center for the Giant Panda before dying in the 2008 Wenchuan earthquake.