From: The Big Nowhere
Pluto is what's called a Dwarf Planet. This allows us to determine for ourselves whether it belongs alongside the large planets. For me, it does belong with the rest of us. It is, however technically just a large Keiper belt object, of which there are many others as Data said.
Also, if we're talking about large spherical moons, then 64 sounds about right. Non-spherical small moons, however, we're talking hundreds. Just depends how you want to look at it I suppose.
As far as drawf planets, our solar system has at least 5 identified at present: Pluto, Eris, Ceres, Haumea, and Makemake. And there could be as many as 200 in the Kuiper Belt.
Lots of interesting reading when you start researching it.
Distant Worlds Fan
'When in doubt...attack!'