Kito has been doing the same thing, in fact I was going to post about it.
Does Max make a gagging sound too, and nothing comes out??
It has happened a few times lately, and he is eating Nutro and Sensible Choice (from Royal Canin), and it hasn't been switched.
Hubby thinks it's because I give him a little canned food with his dry

Either way, I'm taking Abbey for her checkup on Friday, and was planning to ask my vet about it.