Imagine a world where the larger an organism is, the slower its metabolism runs. How would larger animals adapt to this?

larger == slower metabolism == less energy available<br><br>Imagine the larger an organism is, the slower its metabolism runs.<br><br>How would animals adapt to this? What would larger animals do to increase energy supplies? What would smaller animals do to reduce energy costs?<br><br>Imagine the world and societies that would develop in such a world.<br><br>Make it as realistic and logical as possible.