And snarls, barks, yips, hisses, and a variety of meows. Which are deeds as much as words. Food for thought. Darwin wrote a book called "The expression of the emotions in man and animals."
The one thing I remember from it is he asserted that to stare at another animal for more than five seconds was a sign of aggressive intent. Reminds me of a Rolling Stones lyric "Don't you know that it's rude to stare? I always think of that when males of the bipedal species crane their necks out of a car window and stare at attractive or not so attractive females of their species. And now that I think of it, there is surely something aggressive in that stare.