Sand cats raise their young in burrows that offer protection from extreme desert heat and predators.
Litters usually contain two to four kittens, which remain at the den while their mother hunts during the cooler hours of the night
The fur of the Arctic fox provides the best insulation of any mammal and its thickness increases by 140% during winter.
Apparenly they do not start to shiver until the temperature drops to −70 °C (−94 °F).