Warming temperatures are causing venomous caterpillars to expand their range. Two such caterpillars are the asp caterpillar, which packs a very painful sting, and the oak processionary caterpillar, ...

Touching certain stinging caterpillar species, like the buck moth caterpillar, spiny oak slug caterpillar, hickory tussock moth caterpillar, saddleback caterpillar and Io moth caterpillar ...