Best Answer: They are partial albino. From Siam or Thailand. WIKIpedia: The Siamese is one of the first distinctly recognised breeds of Oriental cat. The exact origins of the breed are unknown, but it is believed to be from Southeast Asia, and is said to be descended from the sacred temple cats of Siam (now Thailand). [1] In Thailand, where they are one of several native breeds, they are called Wichien-maat (วิเชียรมาศ, a name meaning Moon diamond). In the twentieth century the Siamese cat became one of the most popular breeds in Europe and North America.