The following notes are based on impressions gained during my stay among Eskimo and European trappers at Clavering Øya, North-East Greenland, in 1939–40. Much attention has been focused on the problem of sledge dogs by European trappers, for during the trapping season they have to depend on their dogs because of the long distances that have to be covered. In an attempt to develop a new type of sledge dog, with the endurance of a Greenland Husky and the speed of an Alsatian, many attempts have been made during the last ten years to breed dogs with these special qualities in view.