A Coldblood Trotter may belong to either one of two closely related and interconnected breeds of horse: the Norsk Kaldblodstraver (Norwegian Coldblood Trotter) and the Svensk Kallblodstravare (Swedish Coldblood Trotter). Coldblood trotters are the result of crossbreeding lighter and faster horses with native coldblooded farm horses either the Norwegian Dølehest or the North Swedish Horse.