Venomous Brazilian Frogs Discovered To Be World’s First

The frog known as Corythomantis greeningi has venomous spikes on its head that deliver toxin to would-be predators.


A group of research scientists encouraged by Carlos Jared that are caused by the Butantan Institute in São Paulo found a couple of class of frogs that can instill toxic substance intense in the jungles of Southeastern Brazil.

The researchers are usually not sure whether or not these frogs are resistant to their very own venom, however they think they’re, Brodie stated.

Researchers are aware of poisonous frogs, but they were amazed to find two frogs in Brazil that put toxins into other animals through bony spines on their heads.

Scientists knew that poisonous frogs exist in our eco-system; what they didn’t know is that venomous frogs that can inject its poison by head-butting its foes. “We’ve got not skilled the impact of of probably the most poisonous species, and hope we don’t”, Brodie informed Reside Science.

A gram of venom from Corythomantis greeningi might be sufficient to takes the lives of more than 24,000 mice, or about six people.

Jared was the first to realize that C. greeningi might have a venomous secretion. Although Corythomantis greeningi has less toxic venom, it has larger head spines and larger skin glands that secrete more venom than Aparasphenodon brunoi.

According to calculations of the researchers, each gram of the venomous secretion of A. brunoi is enough to kill around 80 humans and 300,000 mice.

The frogs are armed with bony spines on their noses, jaws and the backs of their heads. “Amphibians have a wide array of skin toxins that have been well-studied, but this sort of mechanism – transmitting the toxin as a venom – has not been discovered until now”, added Brodie. “It moves the study of amphibian defenses to a new level”.

Not surprisingly, these deadly frogs have no known predators.

Amphibians such as frogs, newts and salamanders secret some venomous poisons in skin glands of predators to prevent and even attack them.


The findings have been published online Thursday in the journal Current Biology. “We’re working to more fully characterize the skin secretions and look histologically at those glands to see what’s the different about these frogs”.

Scientists discovered Venomous Frogs