Hi again, Josh, and thanks for the additional info!
Did the vet listen to her chest at the visit? Sorry, I forgot to ask that earlier. I'm assuming that s/he did.
Cats can get asthma just like humans, and when I read 'wheezing', that was one of my first thoughts; but from your description, and the fact that she doesn't seem to be laboring to breathe, the vet's explanation might make sense. I had a cat who used to make a lot of noise when she breathed (also when sleeping) and the vet also told me because she had a 'high palate', the noise was just 'reverberation' within the mouth/throat. My current cat also 'snores' and makes a lot of noise when he sleeps, but he's overweight, the air in my place is very dry (a/c on all the time--So. FL), and the vet never seemed concerned with this. He also doesn't labor to breathe, or mouth-breath at all.
Since the head/nose x-rays (they were probably looking at the sinuses and throat area)
were clear, and she doesn't seem to be in any respiratory distress, plus she's eating/drinking/pottying normally, I'd agree with the vet's diagnosis at this time. I would suggest that perhaps humidifying the air with a room humidifier may help moisten her mouth/nose/throat when she sleeps, and at all other times.
Since you're now aware of this sound, keep an eye on her and if you notice any change in the sound or she seems to be displaying any additional symptoms which are uncharacteristic for her, definitely have her re-checked by the vet.
Good luck! You're very observant, and that's a great attribute for a cat owner! Images available only to Customers.
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