Yellow woolly bears feed on almost every plant you can name, with the exception of milkweeds (genus Asclepias). You’ll find the caterpillars in late summer; they spin cocoons and overwinter in ...

The fall caterpillars are the “best forecasters,” or the most colorful. Woolly bears feed in the fall in preparation for winter hibernation, where they nearly freeze solid. When springtime ...

Michael Singer at Wesleyan University discovered that, when healthy, tiger moth larvae, also known as woolly bear caterpillars, focus their diet on nutrient-rich food, but switch to eating plants with ...