The desert scorpion protects itself from predators by injecting them with a very painful, paralyzing venom through a needle like tip on its curved tail. But the southern grasshopper mouse (Onychomys torridus) has evolved a way to take that venom and turn it into an painkiller. The video below shows these two desert dwellers in a fight to the death. After you watch you may never think about mice the same way again.
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Eliene Augenbraun is a multimedia science producer, formerly Nature Research's Multimedia Managing Editor and Scientific American's senior video producer. Before that, she founded and ran ScienCentral, an award-winning news service providing ABC and NBC with science news stories. She has a PhD in Biology.