Two nights ago I was laying on the couch reading and Finn was on the floor next to me and all of a sudden he started making this noise that sounded like the buildup to a sneeze without the actual sneeze. It was like having the Ah-Ah without the Choo. He just kept doing it over and over and at first I thought he was dreaming so I woke him up and he kept doing it. I made him go get a drink of water and he stopped after that. Later once we had gone to bed I woke up to him making that noise again. I turned on the light and he looked at me and stopped. Again during the night last night he was doing it. I can't figure out what it is and why it just started. It's not a sneeze and not a cough otherwise I would think maybe allergies were to blame. Any ideas?