In the wilds of Brazil, researchers have discovered frogs with venomous spikes on their heads. Although scientists have long known of poisonous frogs, these are the first venomous frogs -- that is, ...

Most frogs defend themselves with toxins that sit passively in their skin, but only two species are known to go a step further and actively inject venom into anything that grabs them. These little ...

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Two species of Brazilian hylid frog have been identified as the world's first-known venomous frogs. These creatures deliver a powerful toxin through tiny spears affixed to their heads. This poison is ...

A frog species with a toxic venom injection defense mechanism has been described in the semi-arid northeastern region of Brazil. Carlos Jared, a Brazilian scientist at the Butantan Institute made the ...

Venomous frogs are a thing now, apparently. While poisonous frogs are quite common, venomous frogs were unrecognized by science until just now. Venom and poison might get used interchangeably, but ...

The name of a newly described species of frog, native to the Amazon Basin in northern Brazil, has some serious girl power. The frogs have reticulated, semi-transparent eyelids, spines on their hands, ...

Although scientists have long known of poisonous frogs, these are the first venomous frogs -- that is, they not only secrete poison, but are armed with weapons that can deliver this poison into ...