Camels do not store water in their humps. When they need to, they keep most of the water in their bodies from turning into urine. Consequently, camel urine is twice as salty as seawater. When they do urinate, they urinate all over their legs, which helps them keep cool. As soon as they find water, they drink up to 25 gallons within 10 minutes.
Cave rats make urine trails throughout the deep, dark caverns of the caves, which tell the rats how to find their way in the dark.
Many animals use urine to convey social or sexual status The Billy goat urinates all over his belly, chest, and beard to attract a mate. Similarly, a male porcupine sprays his urine in different directions—and when he finds a mate, he urinates all over her.a
