Well, still couldn't find anything concrete, but a few sites pointed out that Yorkies have killed humans. Here's a link to an article about a Pomeranian killing a small child:
http://www.dogexpert.com/FatalDogAtt...lifornia00.htm
No offense taken, dianne, we all would like to think Yorkies can do no harm! They're all sweeties! I was just personally curious about it, since I had never heard of it before today...