It is widely believed to be very hard to determine the gender of a panda before it turns three. According to media reports, Mei Lan, the father of He Ye, was once raised as a female panda.

MILWAUKEE (Gray News) - The Milwaukee County Zoo added another baby this month as it welcomed a red panda. The female cub is the third for mom and dad and is part of the Red Panda Species Survival ...

The panda couple had two female cubs, Yuanzai and Yuanbao, today ages 11 and 4, and both still living at the zoo. The lifespan of pandas in the wild is about 15 to 20 years — and about 30 years ...

The panda, Ying Ying, gave birth to one male and one female cub on Thursday, according to Ocean Park, the theme park where she and her partner Le Le have lived since 2007. The twins were born one ...