The Chow-Chow (sometimes simply Chow:7–8) is a dog breed originally from northern China, where it is referred to as Songshi-Quan (Pinyin: sōng-shī quǎn), which translates to 'puffy-lion dog'. Chow-Chow eyes are typically deep set and almond shaped. The breed is unique by their purple/blue-black tongue which no other breed has except shar-pei's and has very straight hind legs, resulting in a rather stilted gait. According to the American Kennel Club breed standards, any other tone is not acceptable for contests. FCI countries, however, do allow a self-colored nose in the cream. This is not to say that every mixed breed dog with spots of purple on the tongue is descended from Chow-Chow, as purple spots on the tongue can be found on other purebred dogs. To avoid aggression and over-protectiveness as an adult, continuous socialization as early as possible could allow the dog to adjust.