So, Smokey has been having bad dandruff problems these last few months. I believe it is possibly due to her laziness and only partially grooming herself. She's getting quite old (15 years) so I don't blame her.
What should I do to help her? I was looking at her skin earlier and it appears quite dried out and flakes would come off if I gently scraped the skin. Her gray fur makes the specks of white stand out quite nicely...
I've heard adding oil to their food might help over time. If I do this, would it hurt my other cat whose skin and fur is well cleaned?