These hilarious smiley panda pictures are of giant pandas Lu Lu and Zhen Zhen, whose seven minute and 45 second sex session has shattered all records of panda sexual endurance. According to the People Daily
, the happy couple is the current record holder for length of panda sex; their panda peers Yi Bao and Jin Xin only got busy for one minute and 20 seconds, and pandas in general are considered challenged when it comes to procreation. This is because female pandas have only one estrous cycle each year
, lasting anywhere from two to seven days.
Read more on this story and see additional precious panda photos here.
Images: People Daily