History:
One of the most glamorous and popular of the toy breeds, it is amazing to believe that it was originally bred to control rats in Yorkshire mines and cotton mills. The Yorkie is the product of cross-breeding several types of Scottish and English terriers, as well as the Maltese. Prior to 1900, the Yorkie was heavier and larger weighing 12-14 lbs. Selective breeding has brought it down to its current size. Originally a fearless little ratter, by 1875, the breed became popular with ladies of wealth in both Britain and the U.S.

Temperament:

Always eager for adventure, the Yorkie doesn't know it's a small dog.  They have been described as inquisitive and stubborn, sometimes aggressive to strange dogs. They tend to exercise themselves around the home. 
 

Maintenance:

Their long coats require brushing or combing every other day. Grooming must be done on a regular basis. Although the coat is easy to care for it is time consuming and necessary in order to keep your dog in healthy condition.
 

Weight Range: up to 7 lbs.
Avg. Height:    8-9 in
AKC Group: Toy