The Yorkshire Terrier is one of the smallest dog breed of terrier type, and of any dog breed. The breed developed during the 19th century in Yorkshire, England. The Yorkshire Terrier is one of the smallest dog breed of terrier type, and of any dog breed. The breed developed during the 19th century in Yorkshire, England. It may take three or more years for the coat to reach its final colour. Two other breeds that look similar to the Yorkshire Terrier and have shorter hair are the prick-eared Norwich Terrier, along with its drop-eared relative the Norfolk Terrier. Another is the Biewer Terrier, which derives from the Yorkshire Terrier. The Biewer Terrier, bred from blue, white and gold puppies named Schneeflocke and Schneeflöckchen von Friedheck, owned by Mr. and Mrs. Biewer in Germany, was once considered a variation of the Yorkshire Terrier but has since been recognised as a separate breed by many kennel clubs, including the AKC.