my cat died a couple of months ago. A couple of years ago I started having problems with him snoring, after trying to lock him out of my bedroom and many other things I eventualy took him to the Vet. She laughed and said that I would just have to put up with it.
It did stop, around about the time he started to wake me up every half hour during the night - "I'm hungry" or "I'm bored" were his usual reasons.
How so much noise can come out of a small animal is amazing.