During and following World War II, due to a lack of numbers of Russian Blues, some cross breeding with the Siamese breed was introduced. The Siamese traits have now been largely bred out. The majority of their modern breeding program has been carried out in the U.S..
Although they have been used on a limited basis to create other breeds (such as the Havana Brown) or add type to a breed in creation (the Nebelung), Russian Blues themselves are shorthaired, blue cats.
Russian Blue cats
Russian Blues should not be confused with 'British Blues' (which are not a distinct breed but rather a British Shorthair with a blue coat), nor the Chartreux or Korat which are two other naturally occurring breeds of blue cats.During the early 1970s, Mavis Jones, a Russian Blue breeder in Australia, mated a domestic white cat with a Russian Blue with the intent to create a solid white Russian Blue. By the late 1970s, the Russian White and Russian Black colors were accepted by cat fanciers in Australia as true Russian cats. These hybridized colors are accepted in a few other registries and only on a limited basis.
