Woolly Bear

Woolly bear can mean:
 * The hairy caterpillars of the Arctiidae family of moths
 * The hairy caterpillar of the banded woolly bear (Pyrrharctia isabella)
 * The hairy caterpillar of the Arctic woolly bear moth (Gynaephora groenlandica)
 * The larva of the varied carpet beetle
 * A type of thermal undersuit used with drysuits for applications such as scuba diving
 * An episode from Thomas and Friends.