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. :4–5 The bluish color extends to the Chow-Chow's lips; this is the only dog breed with this distinctive bluish color in its lips and oral cavity (other dogs have black or a piebald pattern skin in their mouths). :4–5 Another distinctive feature is the curly tail. However, the blue-black/purple tongue can also be found on the Shar Pei. 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. A reddish-brown Chow-Chow. A reddish-brown Chow-Chow.
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