article_snippet: Throughout yesterday Tian Tian remained very quiet and sleepy, but by 5pm there was a behavioural shift and the results of hormone tests that came back at 7pm, carried out by the University of Edinburgh, confirmed ovulation had occurred. '
article_snippet: Tian Tian is doing very well and everything went according to plan.'
article_snippet: Tian Tian stretches after eating Tian Tian panda cake in Tian Tian enclosure: Both pandas are said to be extremely interested in one another .
article_snippet: Yang Guang feeds on bamboo as Yang Guang bulks up for the breeding season
article_snippet: Yang Guangstands up as Yang Guang looks into the enclosure of  Tian Tian.
article_snippet: Throughout yesterday Tian Tian remained very quiet and sleepy, but by 5pm Tian Tian had a behavioural shift which meant ovulation was likely .
article_snippet: Vets who closely monitored Tian Tian believe Tian Tian may have reabsorbed the foetus.
highlights_snippet: Tian Tian will be under 24 hour surveillance to monitor the pregnancy .