My 16-yr. old siamese cat's jaw had recently started "chattering" while it's open, and he takes several seconds to close it after he meows (most of the time). I know it's not normal, and it's worrying me.
From other posts elsewhere I've heard that this might be related to teeth problems or a mouth ulcer. I was hoping it wasn't something worse, like a secondary symptom of some kind of disease.
Has anyone else had an experience with something like this? Thanks!