Sled dogs can be categorised into two groups, depending on whether or not they are pure bred. Only the four breeds listed below are classified as RNB (Registered Nordic Breeds)dogs and are recognised by the FCI (World Canine Organisation).
Sled-dogs which have interbred with other breeds, such as greyhounds, are not classified as pure bred sled dogs. The WSA/IFSS World Championships in ÖStersund are restricted to RNB (Registered Nordic Breeds), so only the following four breeds will be represented at the starting-line. It will be more than 1100 dogs
THE FOUR RNB (Registered Nordic Breeds)