A desert woodrat is pictured. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any ...

This image shows a desert woodrat in a metabolism cage at the University of Utah. The cage allows researchers to measure how much food and water the rat consumes and how much waste it produces.

But have you ever wondered what plants and animals live in a desert and how they survive there? This is the Sahara. The largest desert on Earth! Wow! It looks like it hardly ever rains here.