Why Has My Cat Stopped Grooming?

Cats spend 30-50% of their waking hours grooming. It's such a fundamental behavior that when a cat stops grooming, it's a reliable indicator that something is wrong. A previously well-groomed cat who develops a dull, matted, greasy, or unkempt coat is telling you they feel bad.

Arthritis and obesity are the most common physical barriers to grooming. Cats need flexibility to reach all parts of their body. An arthritic cat may stop grooming their back, tail base, and rear end because bending is painful. An obese cat simply can't physically reach these areas. The result: matting and a greasy, dandruff-flecked coat concentrated on the back half of the body.

Systemic illness causes cats to stop grooming because they divert energy toward survival rather than maintenance. Kidney disease, hyperthyroidism, diabetes, cancer, and severe infections all cause the coat to deteriorate. This is often one of the earliest visible signs of illness — before weight loss, before appetite changes.

Dental disease makes grooming painful because cats use their teeth during grooming (nibbling at mats and removing debris from their coat). A cat with a severely painful mouth avoids using it for anything beyond necessary eating.

Depression and stress can cause either decreased grooming (resulting in an unkempt coat) or increased grooming (resulting in bald patches). The direction depends on the individual cat.

Nausea — from any cause — suppresses grooming behavior. Cats who are chronically nauseated from kidney disease, IBD, or liver problems often have poor coats.