Litter Size: 3-5

A newly proposed breed, the Biewer, is a developing new breed based on the Yorkshire Terrier, built on an F1 cross to a Yorkshire Terrier. It has been noted that the opinion of many breeders is that as the Biewer breed develops, it should no longer be bred (known as backcrossing) with the Yorkshire Terrier.

Famous "Yorkies"
* Chow Mein from Gypsy

* Smoky World War II hero - Smoky was a Yorkshire Terrier who belonged to William Wynne of Ohio. Mr. Wynne adopted Smoky while serving with the 5th Air Force in the Pacific Theatre. Mr. Wynne trained Smoky to perform various tricks to entertain himself and his comrades. Smoky was later entered in Yank Magazine's Best Mascot Contest. She won first prize and had her picture on the cover.
Smoky became a war dog when she used her small size to her advantage and helped to "run" communication wire through a culvert that was under a runway. Without Smoky's assistance, the runway would need to be excavated while the cable was laid. The runway would have been inoperable for several days. Smoky was deemed the most famous dog of World War Two. She returned home to Ohio with Mr. Wynne where she continued her "entertainment" career.

* Toto from the original book version of L. Frank Baum's The Wonderful Wizard of Oz
Most recognize Toto as a Cairn Terrier from the 1939 film version, and Baum's book did not specifically state Toto's breed. However, from the illustrations in the first book many have concluded that Toto is a Yorkshire Terrier, as this breed was very popular at the time. It should be noted that Toto was a Boston Terrier in later books of the Oz series.

* Mignon, Lisa Douglas' Yorkshire Terrier on the television series Green Acres

* Spike, former canine sidekick of television celebrity Joan Rivers.