Charging up the snow ledge during snow blizzard the Greenlandic sled team is made of amazingly hard working dogs that were used for hunting and in dog sleds for over thousands of years in Arctic. They are the toughest dogs I’ve ever seen capable of running with loaded sled for tens of miles everyday with only one portion of food per day. And they do not run on the easy track, it is all up and down the mountains in a deep snow or over ice.