The bark scorpion feeds on rodents, lizards, and snakes, but can survive a whole year on a single insect. | National Geographic History

The Arizona bark scorpion has the most toxic venom in North America—about 50x more potent than the desert hairy scorpion’s! Its neurotoxic venom can cause severe pain, numbness, and even breathing issues, especially in kids or the elderly. They can actually live for 1-2 days under water, so make sure they are really dead when you pull them out of your pool!! | Jeremy Johnson Photography