7. The Hickory Tussock Caterpillar
An extremely attractive species of caterpillar, the hickory tussock moth is also one that is best avoided. Absorbing nasty chemicals for use as defences from the plants on which it feeds, these are secreted from the hairs on its body. On contact with human skin, severe itching usually ensues, accompanied by very painful burning sensations. Itchy rashes can persist for several days and are thoroughly unpleasant.