In the midst of the hot and humid Colombian rainforest a nearly naked man walks silently among the trees, looking for his next meal. Spotting a distracted monkey, the hunter readies his blowgun and darts. One shot will be enough. According to a first-hand account from 1825, the dart is "certain death to man or animal wounded by it". That's because it is laced with poison.
Hunters from Colombia's Embera tribe regularly hunted birds, monkeys and other small animals using poison darts. The poison came from bright yellow frogs just a few centimetres long.
A single "golden poison frog" harbours enough poison to kill 10 grown men, making these frogs perhaps the most poisonous animals alive. They are one of many species of similarly toxic frogs, which are known as poison dart frogs.