Their venom is considered to be among the most deadly in the world, containing toxins that attack the heart, nervous system, and skin cells. It is so overpoweringly painful, human victims have ...

This story appears in the October/November 2016 issue of Nat Geo WILD magazine. Zeb Hogan, biologist, explorer, and photographer, is on a mission to document and protect the world’s freshwater fish.

Find out which species are among the deadliest twelve animals in: Costa Rica, the Amazon, Asia and the Asia Pacific. The world is home to an array of creatures that have evolved to survive harsh ...