My cat is a year and a half old - and I have had her almost that long - the last two days I have found huge wet spots on my bed, and noticed the side of my cats face was quite wet a few times, and just confirmed that it is from her drooling in her sleep (checked under her face while sleeping...big wet spot, damp face).
This has never happened before, although she is a 'sucker', and has left plenty of wet spots on clothing from sucking, but has never drooled in her sleep before. It is a lot of drool...she'll leave a spot 6 inches across on my bed from napping an hour or two.
BUT, she is eating and drinking normally, and doing all the stuff she normally does. She seems happy and is playful, active, and affectionate as normal. Not sleeping any more or less than usual.
Should I be worried?