I just saw this on TV this morning looks like it has been around for a while,

http://news.cnet.com/8301-17938_105-10345719-1.html

lets your pup tell you what he's saying

but would you really want to know? or do you think you he says it well enough without words?

I think my pup and me have a pretty good relationship without both of us using words, it works well enough.