I have a 7 yr old cat who is quiet as can be. Barely meows, unless feeling lonely, and super quiet when cleaning. My 1 yr old kitten however, meows also when feeling lonely even though my wife and I are downstairs. When the 1 yr old cleans herself, you can hear the suction noise of her mouth and tongue like a vacumn cleaner from the other room. Is this just a difference in cats? Its really hard to fall asleep, when she thinks its cleaning time and on our bed.