Rock hyrax (Procavia capensis) are probably the laziest mammals that I have ever observed. They sleep in the rock overnight and they sunbathe on the rock during the day. This is probably the most energetic that I have ever seen one; yawning. Their closest relatives are the elephants; look at the feet.
Location: Augrabies Falls National Park, Northern Cape, South Africa
Photographer: Jason Gilchrist
![Yawning rock hyrax](https://amazon.clikpic.com/JasonGilchrist/images/yawn-rock_hyrax-Procavia_capensis-Augrabies-Northern_Cape-South_Africa_2.jpg)