The Mezen horse or Mezenok is a Russian breed of draft horse similar to the Pechora. It is nearly extinct; in 2005, there were only 1,000 Mezen horses left, and of that number only 64 were breeding. The Mezen horse originated in the northeastern part of the Arkhangelsk Oblast, between the Mezen and Pineg rivers. The Mezen was most likely developed by breeding together Estonian, Danish, Holsteins, Mecklenburgers, the Northern forest horse, and Finnish horses, as well as various types of trotters. In the last fifty years, Ardennes horses have begun to be bred into the existing stock.