Which breed is traditionally used for herding sheep and is known for its “smiling” expression?

The story behind the answer

Samoyed is correct: this fluffy, white spitz from Siberia is famous for the “Sammy smile”—upturned lip corners that help prevent drool from freezing in arctic temperatures. Bred by the Nenets (Samoyede) people, Samoyeds worked closely with families to herd livestock (especially reindeer), pull sleds, and even keep children warm, which fostered their gentle, people-focused temperament.

To remember: “Smiling Sammy shepherds in the snow.” Border Collies are premier sheep herders but lack the trademark smile; Siberian Huskies and Alaskan Malamutes are primarily sled-pulling breeds. The Samoyed’s grin, dense double coat, and cooperative nature reflect a heritage of working side-by-side with humans in extreme cold.