Korats are a slate blue-grey short-haired breed of cat with a small to medium build and a low percentage of Adipose tissue. Their bodies are semi-cobby, and surprisingly heavy for their size. They are intelligent, playful, active cats and form strong bonds with people. Among Korats' distinguishing characteristics are their heart-shaped heads and large Eye color. They are one of a few breeds where individuals have only one color.The Korat is a natural breed, and one of the oldest stable cat breeds. Originating in Thailand, it is named after the Nakhon Ratchasima province (typically called "Korat" by the Thai people). In Thailand the breed is known as Si-Sawat, meaning "color of the sawat seed".Korats first appeared in America in the 1950s. In 1959, Cedar Glen cattery was the first to import a pair of Korats to the US for breeding: a male named Nara and a female named Darra. The Korat was introduced to the UK by Betty Munford of the High Street, Hungerford.Although it is rare, Korats occasionally have striking or faint white markings or spots or even very faint gray stripes. Sometimes these spots increase in size with age. These are seen as flaws, and the cats are not allowed to be displayed in cat shows, although, of course, it has no effect on their personality or health.