THANK YOU for your replies! It makes me feel a LITTLE better knowing that it could be something as simple as reverse sneezing, which by the way, I've NEVER heard of before. How strange. He does not act sick in any way at all. Sleeps very well and eats very well ....Plays like crazy with his wife (Sadie Ann, 13 months). I was wondering if the A/C had anything to do with it as well. But, Sadie Ann has never had a problem and Deucy hadn't until now and I've had them both in the house ONLY since the day I got them when they were babies. I do keep the house a very cool 68-70 degrees at all times. I also take them outside (but only in my arms) each day for a trip around the yard. They so look forward to it. Neither has ever touched the ground. I'm extremely picky about what I feed them...only the best. HOWEVER, I am taking him to the vet today and get a check up. Thanks again for responding so quickly. I KNEW I could count on Yorkietalk when in a pinch as I have in the past. THANK YOU THANK YOU THANK YOU!!