How do camels survive without water?

Camels are superbly adapted to deserts. Their humps store fat, not water, which provides energy when food is scarce and can be broken down to release some water. They can let their body temperature rise several degrees during the day before sweating, which reduces water loss. Camels also produce very concentrated urine and dry dung, and their oval-shaped red blood cells help them cope with dehydration. When they do find water, they can drink enormous amounts, over 100 litres in a matter of minutes. These adaptations let camels go for many days without drinking.