Yahoo News (USA) August 6th, 2015 12:14 PM: Frogs from Hell: Their Venomous Head Spikes Could Kill You

In the wilds of Brazil, researchers have discovered frogs with venomous spikes on their heads. Most amphibians, such as frogs, newts and salamanders, concentrate or secrete poisons in skin glands to ward off predators. Frogs include some of the most toxic animals on Earth — for instance, the 2-inch-long (5-centimeter) golden poison dart frog has enough toxin to kill 10 grown men, and the indigenous Emberá people of Colombia have used its poison for centuries in blowgun darts.


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