Don't Water Your Kangaroo Rat

As Nomad and others have found, humans need to drink water, but not too much water as it could be dangerous to us as we deplete and flush out the very much needed calcium and potassium levels. This reminded me of the Kangaroo Rat, of which there are some 21 species. The reason 'Roo Rats are so cool, and timely in our water discussion:

Kangaroo rats have highly developed hind legs, live in deep burrows which shelter them from the worst of the desert heat, and rarely drink water. Instead, they have a highly water-efficient metabolism (their kidneys are at least four times more efficient than those of humans), and manufacture water by chemical breakdown of their food.

This came from Wikipedia.

How cool is that?!