I have a 5 lb Manchester Terrier,that I rescued from a horrible family,..she's been with me only 1 1/2 yrs I've never heard her bark or growl but she whimpers and whines in her sleep she sounds so sad that I pick her up and snuggle her to remind her she is now loved and cherished. But my calico cat snores like a car missing its muffler but only if she's been outside that day.When ever my husband snored like that I'd wake him up trying to move him onto his side but I would never do this to my fur baby :-)