Chengdu Research Base of Giant Panda Breeding
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Cheng Ji gives birth to twins @ Chengdu Panda Base
Cheng Ji gave birth to twins on September 12, 2012. The male cubs weighed 187.4 grams and 155.4 grams. Cheng Ji was artificially inseminated on April 14. The twins were the fourth set for Cheng Ji, and first for the Chengdu Research Base of Giant Panda Breeding in 2012.
Source: Chengdu Panda Base