He is kinda old, I think roughly 14. Is this normal for an aging cat, or is there something wrong with him? I don't really know how to phrase the question because whenever I google it, I get images of either matted fur or patches of skin showing through fur. Neither is happening here, I don't really know what it is. His fur is clean and smooth (he is giving himself a bath right now), and I can't see his skin through his fur