Charley makes that horrible gaking noise too. I have only had her for a few months and don't know her medical history, but as far as I can tell, she is just "clearing her throat" I would say it was too loud for that, but I have listened to myself in the morning, hacking and coughing to clear out my overnight congestion, and it sounds very much the same Charley is also raw fed, her poops are fine, she seems perfectly healthy, so I am just watching her for now.