Both of mine growl...one is 19 lbs and my daughter has him at her apartment now. He growls at anyone outside the window.
The other is an attack cat.....seriously! She winds her way around visitor's legs and meows....and if you reach down to stroke her she bites. She will also growl if someone is at the door. Her mom left her when she was hours old...we hand raised her. She was raised with our puppy and didn't know how to meow..only bark..for months! She learned how to meow at the vets when she was spayed.