How do lemmings survive the cold?

Lemmings survive the cold primarily through their thick fur, which provides insulation against harsh temperatures. They also burrow into the snow, creating tunnels that offer protection from the wind and predators while maintaining a more stable temperature. Additionally, their diet consists of nutrient-rich vegetation that remains accessible under the snow, allowing them to find food during winter months. These adaptations enable lemmings to thrive in their frigid habitats.