Daycare workers told her mom that she was bitten by 'the most poisonous caterpillar in the United States' Jason Hahn is a former Human Interest and Sports Reporter for PEOPLE. He started at PEOPLE ...

The caterpillars often fall from trees, and if they land on a person, can sting them. The venom can cause symptoms such as itching and burning as well as nausea, according to the LSU AgCenter.

Saddleback caterpillars may look harmless, but their sting packs a serious punch. Instead of biting, they deliver venom through tiny spikes that break off when touched, releasing toxins.