No, look elsewhere, he says,
There is no such thing as a teacup or large standard. The yorkshire terrier is a toy breed, and standard is "Must not exceed seven pounds." So 7 pounds and below is Standard. Breeders who say they are selling different sizes are misleading customers. Birth weight gives no clue on adult full grown weight. The runt of the litter may end up the largest. Find a breeder who breeds for the right reasons, not just to make money. I always recomend the YTCA, but you still have to do your research.
Yorkshire Terrier Club of America (Awards)