Mrs A. Foster is quoted as saying in 1886, 'If we consider that the mill operatives who originated the breed [...] were nearly all ignorant men, unaccustomed to imparting information for public use, we may see some reason why reliable facts have not been easily attained. 'The breed comes from three different dogs, a male named Old Crab, a female named Kitty, and another female whose name is not known. 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. As with all other dogs, Yorkies have two sets of teeth in their life. When puppies are born, they have no teeth because milk is the only food they need.