A southern grasshopper mouse ( Onychomys torridus) approaches and sniffs the Arizona bark scorpion ( Centruroides sculpturatus) that it has just killed.
Eating a Scorpion
A southern grasshopper mouse eats the Arizona bark scorpions that it has just killed.
Grasshopper mice feel no pain from the venom of an Arizona bark scorpion.
Preparing to Attack
A face-off between a bark scorpion and a grasshopper mouse. The mouse has evolved so that the scorpion's venom blocks pain signals to the brain, preventing stings from hurting.
An Arizona bark scorpion prepares to fight as a grasshopper mouse approaches.
A Desert Duel
A Mearn's grasshopper mouse attacks a striped bark scorpion. Both species are close relatives of the souther grasshopper mouse and Arizona bark scorpion.
A Mearn's grasshopper mouse eats a striped bark scorpion after a successful attack.
A grasshopper mouse with its prey, the striped bark scorpion.
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Stephanie Pappas is a contributing writer for Live Science, covering topics ranging from geoscience to archaeology to the human brain and behavior. She was previously a senior writer for Live Science but is now a freelancer based in Denver, Colorado, and regularly contributes to Scientific American and The Monitor, the monthly magazine of the American Psychological Association. Stephanie received a bachelor's degree in psychology from the University of South Carolina and a graduate certificate in science communication from the University of California, Santa Cruz.