That ain't the way to have cubs, Tian
Edinburgh Zoo has posted footage of pandas Tian Tian and Yang Guang 'wrestling' inside their enclosure.
Iain Valentine, Director or Research & Conservation, said: "There was lots of vocalisation and encouragement from our female and physical contact between the two. He mounted her several times, however full mating did not occur."
The myths and real threats facing pandas
Breeding pandas in zoos is crucial to saving them from extinction. Actually, no not really.
Hopes fade of panda mating at Edinburgh
The clock is ticking for Yang Guang and Tian Tian to mate within a limited window of fertility.
Newsround turns 40 - but how will it handle the pandas?
The last time Julie Etchingham reported on pandas was when she worked on BBC's Newsround in the mid 1990s.