Zoology: Venomous frogs headbutt foe

[Frog News]

Nature (New York, USA) : Zoology: Venomous frogs headbutt foe

Two Brazilian frog species use sharp spines protruding from around their noses and mouths to deliver toxins in their skin to predators — the first evidence of a venomous frog.Most frogs produce toxins in their skin but have no way of deliberately passing them
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