Well, right now I've got two yorkies, plus Kirby and Mr. Fun Kitty. LOL, our zoo is at its maximum capacity. 
 
However, when the time does arise (we don't like to talk about this) that our zoo shrinks, dh and I agree that it's yorkies only from now on. (and perhaps the random shih tzu 

 ) lol. 
I'm amazed at those of you who have 5 or 6! 
edited:  I just wanted to add, that, if possible, it's 
rescue yorkies from now on!  (and don't forget the random rescued shih tzu)