The Samoyed is a breed of large herding dog that descended from the Nenets herding laika, a spitz-type dog, with a thick, white, double-layer coat. It takes its name from the Samoyedic peoples of Siberia. (wikipedia).
Ms C.E.A.Teal or Mitchell has this crest: "on a mount Vert a samoyed dog sejant erect supporting in his forepaws a terrestrial globe Proper."