Which is the most venomous creature on the earth?
An average P. terribilis contains about one milligram of poison, which is enough to kill 10,000 mice-perhaps enough to kill 10 to 20 humans if the poison reaches their bloodstreams.
This extraordinarily lethal poison (a steroid alkaloid, called batrachotoxin) almost does not occur in nature. We have found this poison only among three poison frogs in Colombia and two poison birds in Papua, New Guinea.
The yellow frog stores the poison in skin glands, as do most frogs. Due to their poison, frogs taste awful to predators but P. terribilis' poison kills whatever eats it-except for a snake (Liophis epinephelus). This snake is resistant to the frog's poison but not immune.
"We fed one juvenile frog to a snake and the snake showed great distress and was rendered helpless for several hours," says John Daly, chief of the National Health ...more