The most northern part of Alaska, in the United States, is a wild, savage country. Winters are very hard and last for nine months of the year. During winter, the days are very short and the sun hardly shines at all. It gets so cold that the rivers freeze over, and those hunters brave enough to go out in the harsh conditions use them as roads. Only the toughest hunters venture out to hunt the wild lynx, bear and deer. Their dogs, too, need to be strong and hardy to survive in this wilderness.