They forgot a couple of non-vocal things.

The "I'm so hungry I can't even mew" Silent Meow.

The "If you don't feed me now, I'll burn a hole in your brain" Unblinking Stare.

The "You have no kitties, leave me alone" Disappearing Act after being fed.

The "Let's see how intense your panic becomes when I don't answer while staring right at you from a bookcase" Selective Hearing.  

They are right about babies cries and cat howls, though. I've seen mine look all over in a state of wary hunt-mode when they hear a very young human baby cry.