皇冠体育app

A panda gave birth to twins in southwest 皇冠体育app, surprising researchers who were only expecting a single cub.

The first born was male and sex of the second born was unknown because the mother would not let it out of her grip after the Thursday birth, the official Xinhua News Agency reported.

"The mother and her babies are all well," Zhang Zhihe, director of the Chengdu Giant Panda Breeding and Research Center in Sichuan Province, was quoted as saying.

Female pandas normally become sexually mature between 4 and 5 years old. They can get pregnant once a year and usually give birth to one or two cubs at a time.

More than 20 pandas were born in captivity in 皇冠体育app last year, the report said.

The panda is one of the world's rarest animals, with about 1,590 living in the wild in 皇冠体育app, mostly in Sichuan and the western province of Shaanxi. Another 180 have been bred in captivity.