The end of the Zoo's longer summer hours is in sight, and our animals are getting hit with another big heat wave. This year has been a more mild summer as a whole, but we have had some small sprints of heat. Many of you, visiting or watching, have noticed that Gao Gao has spent many of his summer days in the air conditioning. While this has been frustrating for our guests visiting, please know how much we appreciate your cooperation while we get Gao Gao bear through summer. While Gao Gao has been relaxing most of the day, Xiao Liwu has been quite a character to watch! Throughout the day we have observed him having random energy bursts, and showing off to our guests. Remember this is normal for a panda as they go through their first hormone shift at three years of age! For those of us that have been watching him since birth, up close, it's great to see him really exhibit these bear behaviors. I have had the amazing opportunity to watch five of our panda cubs go through their first hormone shift, and it NEVER gets old. Right now I can honestly say that there is no perfect time to come visit the pandas for good activity levels; there are mornings where Mr. Wu is entirely on FOOD mode, there's SLEEP mode, and then there's DEMO mode! Right now, he has been eating for several hours a day, no specific time, and there is almost always a time where he is running, rolling around, and jumping on stuff in his enclosure. Bai Yun is still in our behind-the scenes-area. As many of you know, our vets have come to the conclusion that she is not pregnant. While we are of course disappointed, we are glad that she is healthy and doing well. Our keepers will be working with her on a daily basis, and getting her out of her den and outside into her garden room. This is a process in itself. Making sure she's comfortable is their number one priority and they are easing her back into her normal routine. So thank you again for your understanding and helping us keep our animals comfortable—remember that in the heat of the day none of our bears are really going to want to be up and about! And this coming week, drink lots of water while you're visiting us at the Zoo! Anastasia Jonilionis is a panda narrator and keeper at the San Diego Zoo. Read her previous blog, A Little Switch.