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. Ideally its maximum size is 7 pounds (3.2 kg). In the early days of the breed, 'almost anything in the shape of a Terrier having a long coat with blue on the body and fawn or silver coloured head and legs, with tail docked and ears trimmed, was received and admired as a Yorkshire Terrier'. It may take three or more years for the coat to reach its final colour. The final colour is usually a black or greyish colour. P. H. Combs, writing in 1891, complained about show wins awarded to puppies, when the dog's coat does not fully come in until three or four years old, 'and the honour of winning such a prize (for a puppy) can therefore be of but little practical benefit to the owner' since the adult dog's colour cannot be exactly predicted.