Lego Duplo and Quarto

I was thinking back a few years and the Lego Duplo days came to mind. I remembered the kids playing with Lego sets called Duplo Babies or Quatro Babies or was it just Quatro? I did remember them being bigger than Duplos. I was also wondering if someone had some of these old sets would they work with with today's Duplo sets. After I Googled Quatro Baby and didn't get the answer I wanted, where did I go? The Lego Message Board of course! I also did a little site search and got an answer to my question. I thought y'all might find it interesting too. There is more to this story!