Usually there are other reasons for the skin changes, but we do recommend evaluation, especially if these are new, persistent or worsening. Skin changes that cause worry include: 1  Skin puckering or dimpling. 2  Nipple inversion (when nipples indent, or seem to turn inward). 3  Thickened skin tissue, with enlarged pores (known as peau d'orange, French for orange peel, which it resembles). 4  Warmth, pain or redness of the skin.
For example, a fruity breath odor is one of the characteristic symptoms of diabetic ketoacidosis, which can be fatal within hours or days. Another example is a fecal breath odor which can indicate certain types of intestinal blockage.
Your cat looks adorable, but the odor coming from his mouth may make his affection less than welcome. Of course, you want to freshen your cat's breath, but before you look into kitty breath mints, you might want to make an appointment with your veterinarian.