Esther's photos with the keyword: woolly

Museum of Yukon Natural History Caribou Crossing Trading Post AIMG 6572

The Sunday Challenge: Wildife This woolly bear caterpillar is looking for a sheltered place to spend the winter. As cold weather approaches, its metabolism will slow down and then it will dehydrate to protect itself from the freezing temperatures. Its circulatory system will produces a cryoprotectant (glycerol) which will causes its tissues to freeze solid during the winter.

Nights are very cold at a base camp in the Andes in Ecuador and this donkey stays warm with his shaggy coat of fur. AIMG 9823

Woolly bear caterpillar. "The Isabella Tiger Moth (Pyrrharctia isabella) can be found in many cold regions, including the Arctic. The banded Woolly Bear larva emerges from the egg in the fall and overwinters in its caterpillar form, when it literally freezes solid. First its heart stops beating, then its gut freezes, then its blood, followed by the rest of the body. It survives being frozen by producing a cryoprotectant in its tissues. In the spring it thaws out and emerges to pupate. Once it emerges from its pupa as a moth it has only days to find a mate." en.wikipedia.org/wiki/Pyrrharctia_isabella AIMG 0370