history - "Although his ancestry is British, the Australian Silky Terrier proudly bears the label "Made in Australia", for it was in Sydney that the breed was first developed. Believed to be basically a cross between the Australian Terrier and the Yorkshire Terrier, the Silky was bred to fill the need for a small terrier which would be suited to life in a small house or cottage but, at the same time, would be effective in hunting and killing domestic rodents." googled silky pic below...
also, here's the akc standard description:
American Kennel Club - Silky Terrier
i read somewhere else that, apart from the snout and size coat length also distinguishes silky and yorkie. silky's hair will grow long, but not all the way to the floor