This Woolly Bear Caterpillar lives in the Arctic and no matter how fast it eats, it can never gather enough food in one summer to turn into a moth. In winter it freezes solid and awakes four months later to start eating again. This happens year after year, but eventually a very special spring arrives. At the age of 14 it weaves a silk cocoon and becomes a moth. When it emerges the moth only has a few days to find a partner and mate. (Frozen Planet - BBC)