The banded woolly bear is the larval form of the Isabella tiger moth. It is called a woolly bear because of the long bristles, setae, which resemble fur. Banded woolly bear caterpillars emerge from their egg in the fall, which is why they are a good indicator for the fall season. They will spend the winter in their larval form, producing a biological antifreeze to help them survive the cold. When things warm up again they will eat and then spin a cocoon. The emerged Isabella tiger moth will live out through the summer reproducing the next generation.