Drastic changes in appearance
If your cat isn’t feeling well, then it will definitely show. You might notice that your cat sits in a hunched position or moves with less grace than you’re used to seeing her. Also, tilting the head or carrying the tail in a different manner might ultimately indicate that something’s definitely not right.
Also, it’s worth noting that a cat that doesn’t feel too good will stop grooming itself. If you can’t tell whether or not a cat stopped grooming itself, you might want to keep an eye out for a greasy and unkempt coat, increased matting, too many clumps of loose fur, a less shiny coat, and an increase in dandruff. In most cases, this change never comes by itself, so you’ll definitely spot other symptoms, too.