He only does it when eating...and does it when eating his grain, grass hay and pasture grass. So if he does it when eating pasture grass and grain...that rules out hay dust.
We started wetting the grain because at first I thought he was just eating to fast...didn't work so that rules out gobbling.
His teeth were done in June...it was a new vet but he was highly recommended and I don't see any obvious sharp points...so that rules out teeth problem.
We just moved to a new area...much more trees and other plants that he isn't used to in this area. He doesn't have access to any trees in his paddock...so he's not eating something bad.
Could it be an airborne allergy? If so...what can be done about it.