Animals have developed various adaptations to survive in extreme cold environments. Some of these adaptations include thick fur or feathers to provide insulation, a layer of fat under the skin to retain heat, reduced blood flow to extremities to conserve heat for vital organs, and hibernation or torpor to lower metabolic rate during harsh conditions. Additionally, some animals have special enzymes in their blood that prevent it from freezing, while others have adapted to change their body color to camouflage in snowy surroundings.
