Tibetan sand foxes have long, thick fur that helps them stay warm in the cold climate. They also have a layer of fat under their skin that helps keep them warm. Their ears are big and furry, which helps keep their heads warm. And they have black skin, which protects them from the sun’s UV rays. Tibetan sand foxes also have some behavioral adaptations that help them stay warm. For example, they move around less during the day than most other foxes do, and they often sleep in sheltered areas where it is warmer. When it is hot outside, they will seek out shady areas to rest in.