During the day, hippos rarely leave the water, but at night they typically sleep on land. They are very susceptible to sunburn and as soon as the sun starts to get hot, they get back in the water. This was first thing in the morning when the sun just broke the horizon and several hippos were out foraging on the plains of the Masai Mara in Kenya. In the background, a few buffalo keep a close watch on their often cantankerous neighbors.