Don't be duped by "breeders" selling "rare colored" Yorkshire Terriers or any other breed. This is nothing but a sales pitch to get more money for sub-standard and non-standard "designer" puppies. These "rare colored" Yorkies are bred for ONE TRAIT ONLY: COLOR! You will not see these "rare" puppies being offered for sale by any responsible hobby or exhibitor breeder. These "rare" colors are mostly offered for sale by the puppy mills and back yard breeders who's sole agenda is to make money. These "rare colored Yorkis" are more than likely a mix breed as the Yorkshire Terrier does not carry the color white. The parti/piebald, chocolate, white, black and blond/gold genes were added years before A.K.C. Mandatory D.N.A. requirements by mixing Yorkis with another toy dog that carried those genes. Possibly a Papillon, Pomerainian, Shih-Tzu, Chihuahua, Maltese, Toy Fox Terrier or Rat Terrier was bred in..It is believed that there was an "oops" breeding in that kennel introducing the parti gene into the Yorkie gene pool. Fast forward 20+ years of breeding back and forth to standard Yorkis and you have your parti colored Yorki.
As you can see by the history of the Yorkshire Terrier, none of these parti colored dogs were used when developing the breed, not even the Maltese.(who wants to breed in white hair of incorrect texture when developing a blue/tan silky dog??) And you can also see that the "rare colored Yorkis" don't even come close, conformationally, to a true, well bred Yorkshire Terrier.( Ever notice that most chocolate Yorkis look like Chihuahuas?) Most breeders that breed only for the "rare" colors are only interested in color to the exclusion of everything else, including health problems and soundness in the breed. When they see "color", they see dollar signs only, Breeding only for the parti color can be risky because doubling up on the parti gene can result in blindness and bilateral or unilateral deafness, the latter which can ONLY be diagnosed by a Baer test. Ask any parti breeder for proof of a Baer test done on all of their parti dogs or puppies for sale. It is very doubtful any of these "breeders" can show you any test results. In fact, it has only been recently that the "parti breeders" even added a paragraph about parti gene deafness on their web site. And that only happened AFTER it was brought to their attention via a chat forum, by concerned reputable breeders.(5/2009) The "parti breeders" deny any health problems regarding deafness in their dogs.(Funny how ALL the other breeder sites that breed parti/piebald dogs have parti health problem occurrences information written on their sites, such as the Bulldog, Papillons, Great Dane, Boxers, Aussies, etc)
*T-Cups, Apple Head, Pocket Puppies,Micro Mini, Thimble Size or Baby Doll Faced Yorkies are also another sales pitch by unethical breeders only interested in money. These non-standard "Yorkies" have many health problems as, again, they are only bred for ONE TRAIT ONLY and for one reason only. Epilepsy, seizures, breathing problems, open fontanel and horrible patella problems are just a few related health problems. Many are always sick and have short life spans. Let alone normal eating issues.
*There are also plenty of unethical "breeders" of standard colored Yorkis out there. Most of these "back yard breeders" have no interest in the breed except to make a few extra bucks. These "breeders", by far, have done the most damage to the Yorkshire Terrier breed. Over size, under size, huge floppy ears, long terrier faces, incorrect soft coats, incorrect colors, bad top lines are what you can expect to buy from back yard breeders and pet stores. Almost none of them are aware nor do they care about the health problems specific to the Yor