17. Poison Dart Fog

Packed into two inches of vibrant amphibian skin is enough toxin to kill an army of 20,000 mice. This implies that with approximately two micrograms, or the amount which would fit on a pinhead, you can successfully stop a much larger creature, like a human, dead in its tracks. And to make things worse, the toxin is found on the top layer of the Poison Dart Frog’s epidermis (in other words, its skin). That means don’t touch!