Wikipedia
Bone-mouth or Guzui (骨嘴, pinyin: gǔ zuǐ), literally means Bony Snout in Mandarin Chinese, is the original type of the Shar Pei dog breed. There are two varieties in Shar-Pei: a traditional type with fewer wrinkles, roof-tile muzzle, pointed tail, short hair (sandpaper coat), and a modified heavier muzzle (hippopotamus look)with meat padding on top and longer hair (brush coat). Breeders in China (particularly in Southern China, Hong Kong, Macau) commonly called the traditional type found originally in Dali (Dailek, Dailet), Namhoi City in Guangdong Province as the Bone-mouth (Bony-snout) because of its dry type of muzzle, and the latter development in the Western world as the Meat-mouth (Meaty-snout) because of its meaty type of muzzle with loose skin. Sharpei Club Hong Kong based its breed standard on the traditional bone-mouth standard. This Bone-mouth wiki refers to the standard of Sharpei Club Hong Kong, formerly known as F.C.I. standard 309/1994.