The fall caterpillars are the “best forecasters,” or the most colorful. Woolly bears feed in the fall in preparation for ...

Woolly bear season has arrived. The fuzzy black and brown caterpillars are appearing in record numbers this year, crossing roads, climbing house walls, hanging out in driveways, and curling up ...

Scientists think that by deliberately eating plants laced with toxic alkaloids, the caterpillars either poison the invaders inside them or boost their own immune systems. A study found that woolly ...