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.
Stephanie Pappas, Live Science Contributor
Stephanie interned as a science writer at Stanford University Medical School, and also interned at ScienceNow magazine and the Santa Cruz Sentinel. She has a bachelor's degree in psychology from the University of South Carolina and a graduate certificate in science writing from the University of California, Santa Cruz.