The Siberian is a domestic cat breed that has been present in Russia for centuries. The full name of the cat is the 'Siberian Forest Cat' although sometimes referred to as the 'Siberian' or the 'Siberian Cat'. The cat is an ancient breed that is now believed to be ancestral to all modern long-haired cats. The cat has similarities with the Norwegian Forest Cat to which it is likely closely related. It is a natural breed and the national cat of Siberia.