On the first day of our canoe safari, on the Lower Zambezi, we stopped for lunch under a big shade tree on the Zimbabwe side of the river. While everyone stretched out to nap after a sandwich and a salad I started getting my camera gear out. I wanted to get a photo of a hippo yawning. Typically, the hippo let out a huge yawn as I was setting up. Then I had to wait quite a while for him to do it again. It worked out for the best though, as these elephants moved into frame just before the hippo let out a huge gaping yawn.