Edinburgh Zoo pandas 'are preparing to mate'
6 March 2013 Last updated at 07:10 GMT
Keepers at Edinburgh Zoo have taken the first steps to prepare their two giant pandas for this year's breeding season.
Yang Guang and Tian Tian have been allowed to swap enclosures for a short time.
This lets the animals scent mark each other's accommodation ahead of being brought together.
James Cook reports.