[tlhIngan Hol] Difference between "all X" and "all of X"

There's something I don't understand, which perhaps has to do with the fact that english is not my native language. What's the difference between "all X" and "all of X" ? Suppose I say {vIghro' Hoch mutmey}, which means "all species of the cat". And now suppose I say {vIghro' mutmey Hoch}. which means "all of the species of the cat". Is there a difference in meaning between these two ? And if yes what ? Because, I can't *feel* anything different between them. ~ m. qunen'oS