Samoyed (Russian: Самое́дская соба́ка or Самое́д) is a breed of medium-sized herding dogs with thick, white, double-layer coats. They are a spitz-type dog which takes its name from the Samoyedic peoples of Siberia. Descending from the Nenets Herding Laika, they are a domesticated animal that assists in herding, hunting, protection and sled-pulling. Samoyed dogs are most often white, and can have a brown tint to their double-layer coat which is naturally dirt-repellent. They are known to be used in expeditions in both Arctic and Antarctic regions and have a friendly and agreeable disposition.