Beware of This Caterpillar

Known as the White Hickory Tussock Moth Caterpillar, this white/fuzzy caterpillar contain a venom in its black spines that will irritate human skin. An encounter with this caterpillar is not deadly, but can cause a burning, nettle-type, itchy rash of mild to moderate severity. Some people may experience more severe symptoms such as swelling and nausea.

I have found several of these caterpillars on the walnut trees around our barn.