Question: are black wooly worms poisonous?
Answer: This caterpillar, like the woolly worm, has stiff hairs called setae that give it a fuzzy appearance. They may look like stinging spines, but in the case of both caterpillars, they are harmless. Please note: Some moth caterpillars do have venomous spines, so it is best not to handle unfamiliar caterpillars.