Siberian fur trade best quality fitch fur comes from Siberia. The fitch, or European polecat, is a ferret-like animal, and the corsac is a type of fox that is also found in Siberia. However, these furs are less popular because foxes are common to virtually every fur-trading country in the world. The Siberian ushanka is a full fur hat, consisting entirely of warm fur. It is commonly made out of black foxes, red foxes, silver foxes, shadow foxes, blue foxes, brown foxes, raccoons, martens, or black beavers. It covers the top of the head and comes down to also cover the ears and
Steppe polecat and black-footed ferret, with which it is thought to have shared "Mustela stromeri" as a common ancestor. The steppe polecat likely diverged from the European polecat 1.5 million years ago based on IRBP, though cytochrome b transversions indicate a younger date of 430,000 years. As a species, the steppe polecat represents a more specialised form than the European polecat in the direction of carnivory, being more adapted to preying on larger rodent species; its skull has a stronger dentition, its projections are more strongly developed and its muscles of mastication are more powerful. The steppe polecat's growth rate is also