The Norwegian Forest Cat is a breed of domestic cat native to Northern Europe, and adapted to a very cold climate, with top coat of glossy, long, water-shedding hairs, and a woolly undercoat for insulation. Although this is uncertain, the breed's ancestors may have been short-haired cats brought to Norway by the Vikings around 1000 AD, and may also have included the long-haired Siberian and Turkish Angora. During World War II, the breed became nearly extinct until efforts by the Norwegian Forest Cat Club helped the breed by creating an official breeding program. It was not registered as a breed with the European Fédération Internationale Féline until the 1970s, when a local cat fancier, Carl-Fredrik Nordane, took notice of the breed and made efforts to register it. Currently, the Norwegian Forest Cat is very popular in Norway, Sweden, Iceland and France.