Pandas prefer choosing their own sex partners, researchers find

Worried about the low sex drive of giant pandas in zoos, scientists have tried many things to get them in the mood - including Viagra and "panda porn".

When all else failed, they've turned to artificial insemination to ensure the endangered black and white creatures have cubs.

On Tuesday, a study suggested the answer may be a lot simpler and, perhaps, more obvious: Let the pandas choose their own mates.