Three facts of the 16 mammals species of Alaska.The work include the pictures of each mammal of Alaskan Fauna and three interestings facts of it. There are information of 16 fauna species, which populates these North American State.Arctic foxes must endure a temperature difference of up to 90–100°C between the external environment and their internal core temperature. To prevent heat loss, the Arctic fox curls up tightly tucking its legs and head under its body and behind its furry tail.