

Most caterpillars with conspicuous ornamental spikes and spines are actually not venomous. Are black and brown wooly worms poisonous? The more black there is, the more severe the winter. If their rusty band is wide, then it will be a mild winter.

Woolly bear caterpillars-also called woolly worms-have a reputation for being able to forecast the coming winter weather.

What does it mean when you see a black and brown Wooly Worm?
