Question: are the fuzzy white caterpillars poisonous?
Answer: White, Furry and Poisonous: The Hickory Tussock Moth Caterpillar. This white and black furry caterpillar looks kinda cuddly, but it's not as friendly as it appears. ... That said, they do excrete poison when handled, and the chemical they excrete can cause a poison ivy-like rash.