Cats that are in discomfort are more likely to act aggressively than usual. When people or other pets in the house approach it, a cat may growl or hiss, feel uncomfortable being held, and hate being brushed or combed. They may also bite or scratch, particularly if a person touches or moves the affected area, or if the cat expects you to do so.
Appetite and Water Intake Changes
When cats are in discomfort, they may lose interest in eating and drinking. Consult your veterinarian if you detect any changes in your cat’s food or drinking habits. This could indicate pain or a variety of other major medical conditions.