🐼 Female giant pandas have a very short window of ovulation—just 48 to 72 hours out of the year. To pinpoint this window, our panda team looks for signs that Mei Xiang is showing interest in Tian Tian. While she has been showing signs of estrus, like water play, in this video, Mei Xiang (right) moans at Tian Tian (left), which indicates that she is not interested in breeding and has not reached peak estrus yet. When she is ready to breed, keepers expect to hear her make positive vocalizations—l