Fur trade marten furs could generate in international markets spurred a "fur fever" in which many Russians moved to Siberia as independent trappers. From 1585 to 1680, tens of thousands of sable and other valuable pelts were obtained in Siberia each year. The primary way for the Muscovite state to obtain furs was by exacting a fur tribute from the Siberian natives, called a "yasak". "Yasak" was usually a fixed number of sable pelts which every male tribe member who was at least fifteen years old had to supply to Russian officials. Officials enforced "yasak" through coercion and by taking hostages, usually
Hunting in Romania chase critters even in their burrows. Fox hunting ("vanatoarea de vulpe") is also featured in Romanian literature and folk tales, where the cunning of the fox is a common theme. Small game furbearers are plentiful in Romania and usually hunted with the aid of dogs and snow tracking. Species include European badger ("Meles meles"), European hare ("Lepus europaeus"), European pine marten ("Martes martes"), beech marten ("Martes foina"), European polecat ("Mustela putorius"), ermine ("Mustela erminea") and weasel ("Mustela nivalis"). A rare animal is the marmot ("Marmota marmota"). Otter ("Lutra lutra") can be found in the Danube Delta and other marshlands, and