Well, everytime a cat displays changes in its behavior we should try to find out why this is.

Sometimes it's just that they change their habits, for example mine would sleep in my bed for months, then decide to sleep only in the living room for the next couple of weeks.

How did the meowing sound? Maybe he just wanted to talk to you? As CatDad has said, it could be just a change in his habit, but to be on the safer side, maybe you could call your vet and ask him about it?

Please let us know if Cubby continues doing that.

Kirsten