I have a Yorkie, a Toy Poodle and two Chihauhuas. My Poo is the dominant girlie, and all get along just fine! On occasion I'll hear a yelp when someone gets playing a little rough, but that's about it. They really enjoy each other, and we really enjoy them!
I have a super supportive awesome hubby that helps too, so it's hardly any work, and we both love them all incredibly much.
When I go out, I don't often take more than two at a time, so we each have one to hold. But the others seem content knowing they'll get their turn next time.
Here are my kids:
http://picasaweb.google.com/jlmafera...ey=CZ379NtByOA http://picasaweb.google.com/jlmafera...ey=LmexkjS7eQc