European polecat
The European polecat originated in Western Europe during the Middle Pleistocene. its closest living relatives are the steppe polecat, the black-footed ferret and the European mink. It can produce fertile offspring with the steppe polecat and the black-footed ferret. Hybrids of polecat and mink tend to be sterile, and are distinguished from their parent species by their larger size and more valuable pelts.