Sounds like it would not be a problem at all. I have 2 yorkies, one loves all other dogs, one is afraid of EVERY other dog out there (even ones his size) except his brother. They were both socialized around plenty of other dogs... my little guy is only 4.5lbs and such a cuddle bug baby, I dont know if that has to do with his fear of other dogs or not. So it could just be the personality of the particular yorkie with other dogs.
