35. Frogs — Who are the best leapers on the planet? Frogs! They can launch themselves over 20 times their own length! That is like a person jumping over 100 feet! Did you ever wonder how frogs can croak so loudly that they can be heard for miles, but not blow out their own eardrums? Well, frogs have ears that are actually linked to their lungs. When they hear, not only does their eardrum vibrate, but their lungs do too! This special system protects them from hurting their ears. There are over 1000 different frog species in the Amazon!