Chico did the same thing regularly for a couple of weeks and seldom does it anymore, it was always worse while he slept ot was just waking up. The vet said his tongue got stuck to the top of his mouth where his soft pallete is. It's sort of like having sinus trouble in that the mucus in his mouth gets thicker and the snorting and reverse sneezing thing is his way of trying to clear it out. I don't know a better way to describe it!
He also said that it would get better as he got older but that some dogs do it all their lives.
He also said that it would get better as he got older but that some dogs do it all their lives.