[4]: 492 Although the Norwegian and Swedish coldblood trotters are substantially considered a single breed,[5] two national stud-books are maintained, and registration requirements differ in some respects between the two countries.
Bay in all its variations is the most common coat colour, followed by chestnut and black.
The Coldblood Trotter has a relatively small and square head with large nostrils.
Coldblood Trotters are very rarely found outside the Nordic countries.
The two types compete in shared heats that exclude entry of light trotter breeds or Finnhorses.