My husband does that.....!!!!
Just wondering - does your Littlie have free-roam, or is he confined to a crate at night?
When Harry
used to be crated at night, I often used to hear those sounds.
Ann's quite right, sometimes he WAS dreaming....but I was worried about him being thirsty, so would leave a small bowl of water in there....which was often knocked over his bed etc. in the morning.
We got round this by attaching a water bottle to his crate - it didn't take too long for him to learn how to use it (a tiny smear of peanut butter over the drippy-bit helped enormously
)
Hope you manage to sort it out! Sally + Harry x