That is strange. Raustyk prefers to hang her tongue out of the right side of her mouth but she does sometimes hang it to the left and can use it either way.

It sounds like he's not even able to use it on the right side which would concern me. I don't know if there a nerve or something that runs from the eye to mouth but one would think so????
I'd defiently have it checked out!
And make sure to mention to them that you do not want to see that vet & you even have it in your file, maybe they can make that note bigger or something.

Good luck & keep us posted.