Poison dart frog

Poison dart frogs (or dart poison frogs) are some of the most brilliantly colored frogs in the world. Found in Central and South America and measuring about the size of a paper clip, their most famous characteristic is perhaps the toxin secreted from glands on their backs. Indian tribes in the Andes region of Colombia rub the tips of their blowgun darts over the backs of the frogs for hunting, hence the creature's name. It is said that if the frog is strikingly beautiful then it's probably poisonous, and if it's beautiful and also easy to catch then it's probably deadly.

In the 1970s it was discovered that the poison of one species was 200 times more lethal than opium.