How do Arctic animals survive to cold winters?

Arctic animals have evolved several adaptations to survive the harsh cold winters. Many species, such as polar bears and seals, have thick layers of fat and fur for insulation, while others, like arctic foxes, change their fur color to white for camouflage and warmth. Some animals, like caribou, have specialized hooves for walking on snow, and many have developed behaviors such as hibernation or migration to cope with the extreme temperatures and scarce food resources. These adaptations collectively enable them to thrive in one of the planet's most challenging environments.