The Shar-Pei is a type of dog breed known for its deep wrinkles and blue-black tongue. The breed originates from southern China. This coat length resembles the coat of the Chow Chow and was probably inherited from that breed. The personality of the bear-coat is very much like that of the brush-coat. Scientists from the Department of Genome Sciences at the University of Washington, Seattle, announced in January 2010 that they had analysed the genetic code of 10 different pedigree dog breeds. In the Shar-Pei, they discovered four small differences located in the gene HAS2, which is responsible for making hyaluronic acid synthase 2. The personality of the bear-coat is very much like that of the brush-coat. Scientists from the Department of Genome Sciences at the University of Washington, Seattle, announced in January 2010 that they had analysed the genetic code of 10 different pedigree dog breeds. In the Shar-Pei, they discovered four small differences located in the gene HAS2, which is responsible for making hyaluronic acid synthase 2.