The Difference in the Parti Yorkie and the Biewer
As far back as we can trace the parti color has been in the Yorkshire Terrier. It is a recessive gene that can be explained very well at the Colorful Yorkie website.
CYTC...Party Color
Now as to the difference of the two parti colored dogs, From my tracing of pedigrees and speaking to numerous people. The Biewers started with Mr. Biewer purchasing a stud dog in 1975 from Streamglen Kennels, Streamglen Richard. Nikkos Kennels purchased a couple of females from Streamglen, One being Streamglen Milady. At the time Streamglen was producing Champion status yorkies and were selling yorkies across the world and the United States.
Mr Biewer started breeding Ch. Streamglen Richard to all his Female Yorkshire Terriers trying to make his own mark by producing Champion quality yorkies that would come from his kennel. In his quest for champions, he did a lot of line and inbreeding. Then in January of 1984, a Parti colored Yorkshire Terrier was born from 2 of his Champion dogs line bred from Streamglen Richard. Darling and FruFru.
On the other side of the ocean was Nikko’s Kennels were doing the exact same thing, breeding for Champion Yorkies. Nikkos purchased their Champion male(Ch. Quarnhill Fusspot) from Stoneybrook Kennels in 1971 and bred him to Streamglen Milady, the female they obtained from Streamglen Kennels. Nikkos then began producing Champion Yorkies and continued to line breed also. In the 80’s Parti colored Yorkies started showing up in Nikkos kennels also, Gloria couldn’t bear to put the pups down so she passed them out the back door as pets and told them not to say where they got them(her own words).
Mr. Biewer did get his first ones registered with VDH but they designated them wrong color not for breeding, he wanted his adorable dogs to be shown so he went in search of a club that would accept them as a separate breed because they could not be shown as Yorkshire Terriers. The ACH was the first club to accept them as a distinct and separate breed. The dogs were then registered as Biewer Yorkshire A la Pon Pom. They originally had docked tails but Germany passed a law against docking so the tails then remained long.
In the USA, others wanted theirs registered with AKC as they were out of registered dogs and they wanted the right color to be shown on the papers( Black , white and tan), so in 2000 after 18 months of DNA testing AKC accepted the Parti colored Yorkshire Terrier.
During this time each went its own way in developing and registries.