onebadscrambler - THAT was information I didn't have. Your Yorkie actually performed the "I'm not a threat" behavior, a totally submissive approach that goes all the way back to wolf packs. Your Yorkie was very well socialized to other animals and it knew what it was doing, and I have little explanation for what the pit bull did.

Thank you for clarifying that your Yorkie, rest his little doggie soul, did NOT suffer from Napoleonic syndrome.