Not one, but two! Giant panda wows Vienna zoo with twins (Watch)

Image credit: Zoovienna.at

New Delhi: The giant panda who gave birth at Vienna's Schoenbrunn Zoo last week has surprised zookeepers as they discovered something secret, yet exciting lately – an extra cub!

The zoo announced last Monday, August 7, that mama panda, Yang Yang, had given birth to one cub. However, soon zookeepers discovered there were two cubs instead.

The birth was observed by camera and footage from the zoo showed the two little pink cubs resting on their mother's chest as she lay on her back.

Video credit: Zoovienna Tiergarten Schönbrunn/YouTube

"It sounded as though two cubs were squealing, but we only ever saw one," zoo director, Dagmar Schratter, said in a statement on Tuesday.

Untill now, Yang Yang has given birth to three other cubs, and all of which are now in China.

Meanwhile, the Schoenbrunn Zoo says no other European zoo has managed to breed giant pandas by natural means.