Cat Not Grooming: Why It Happens and What to Do

Name: Cat Not Grooming: Why It Happens and What to Do
Creator: Dr. Zubair Khalid

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-10-03

A cat that stops grooming is often telling you something is wrong. Grooming is a maintenance behavior that normally takes up about 4% of a cat's daily activity, so a sudden drop in self-care is a real change worth paying attention to [1]. Common reasons include pain, extra body weight, dental problems, and underlying illness.

This article is educational and is not a substitute for veterinary diagnosis or treatment.

Quick Answer

A healthy cat's coat has a natural gloss and springs back when you touch it, with no bald patches, fleas, ticks, wounds, or unusual bumps [2].
A cat not grooming the back end often points to pain, arthritis, obesity, or a problem in the mouth or rear area.
Senior cats and overweight cats are the most likely to slow down on grooming, but any age can be affected.
Sudden hair loss in cats is often linked to itching, pain, stress, or a skin infection, and cats can hide itching well [3].
If grooming stops suddenly, or you see bare skin, sores, or a dull, greasy coat, book a veterinary visit.

What Normal Grooming Looks Like, and What Changes

Cats are fastidious by nature. Their tongue and teeth act as built-in grooming tools, and most cats keep themselves clean without help [2]. Normal grooming happens in short bouts throughout the day, and most sessions cover two to seven body parts [1].

What matters most is your cat's own baseline. Some cats groom a lot, others less, and that variation is normal [1]. The signal to watch for is a change from your cat's usual pattern.

Signs a cat has stopped grooming

A dull, greasy, or clumpy coat instead of a glossy one [2]
Dandruff, mats, or a coat that feels stiff instead of springy [2]
Bald patches, scabs, or red, irritated skin [2]
A dirty or soiled rear end, especially after using the litter box
A strong body odor
Greasy or shiny skin, particularly on the belly and inner legs

Signs a cat is grooming too much

Grooming problems go both ways. A cat can also overgroom, which causes hair loss. Excessive grooming, often triggered by stress, is a known cause of bald spots in cats [3]. If you notice thinning fur or bare patches instead of a dirty coat, that is a different problem. You can read more about that pattern in Cat Overgrooming: Why It Happens and What to Do and Why Is My Cat Grooming So Much?.

Why a Cat Stops Grooming: Main Causes

A cat not grooming itself is usually dealing with one of a handful of problems. The table below groups the common causes and what each one tends to look like.

Cause	Typical clues	How urgent
Pain or arthritis	Stiff walking, trouble jumping, matted fur on the back or rear, cranky when touched	See a vet soon
Obesity	Cannot reach the back end, greasy coat on the lower back, weight gain	Routine visit
Dental or mouth pain	Drooling, bad breath, dropping food, pawing at the mouth, dirty face	See a vet soon
Skin infection or parasites	Itching, scabs, redness, hair loss, fleas or flea dirt	See a vet soon
Allergies	Itching, licking, hair loss, recurring skin problems	Routine to soon
Stress or anxiety	Overgrooming in patches, hiding, litter box changes	Routine visit
Hormonal or internal disease	Dull coat, weight change, appetite change, shiny skin on the belly	See a vet soon
Cancer (rare)	Ventral hair loss with shiny skin, often with other signs of illness	See a vet now

Pain and arthritis

Pain is one of the most common reasons a cat stops grooming. Cats with sore joints, a bad back, or a painful mouth often skip the areas that hurt to reach. A cat not grooming the back end is a classic sign of discomfort in the hips, spine, or rear limbs.

Cats are also good at hiding pain, so the grooming change may be your first clue. If your cat seems stiff, moves less, or avoids being touched in certain spots, mention it to your vet.

Obesity and reach problems

An overweight cat may simply be unable to reach its back end or hindquarters. This is one of the most straightforward causes to spot, and it often shows up as a greasy or matted lower back. Weight management is a big part of the fix, but your vet should rule out other causes first.

Dental and mouth problems

A cat with a sore mouth may stop grooming its face and chest. Watch for drooling, bad breath, or trouble eating. Dental disease is common in cats and is easy to miss at home.

Skin infections, parasites, and allergies

Itching or pain commonly causes inflammatory hair loss. Diseases that cause itching or pain include bacterial and fungal skin infections, parasites, and allergies [3]. Ringworm and other fungal infections can cause patchy hair loss and scaling, and some cats carry the fungus without showing signs at all [4].

Cats can hide itching, so you may not see scratching even when the skin is irritated [3]. If your cat is scratching but you cannot find fleas, see Cat Scratching But No Fleas: Possible Causes and Next Steps.

Stress and behavior

Stress can drive grooming changes in either direction. Some cats overgroom to the point of bald patches, and stress is a common trigger [3]. Cats with a stress-related grooming disorder tend to groom fewer body parts per session than healthy cats, which shows up as focused, repetitive licking in one area [1].

If your cat is pulling out fur in clumps, that pattern deserves its own look. See Why Is My Cat pulling out fur in clumps? Psychogenic Alopecia and Over-Grooming.

Hormonal, internal, and rare causes

Hair loss in cats often reflects an underlying endocrine, hereditary, infectious, allergic, parasitic, or self-induced disorder [5]. In other words, the coat is often a mirror of something happening inside the body.

Rarely, hair loss is a paraneoplastic sign, meaning it is linked to a tumor elsewhere in the body. One report described a cat with a skin mass followed by hair loss on the underside of the body with shiny skin, tied to an internal cancer [6]. This is uncommon, but it is one reason a sudden, unexplained coat change deserves a vet visit.

Trauma can also cause delayed hair loss. In one case, a cat lost fur on the lower back a month after a road accident, even though the skin looked normal right after the injury [7]. If your cat had a recent injury or accident, mention it to your vet.

Red Flags That Mean an Emergency

Most grooming changes are not emergencies, but some signs need immediate care. Go to an emergency clinic now if you see any of these:

Open wounds, deep sores, or skin that looks infected
A cat that cannot stand, walk, or use the litter box normally
Sudden collapse, severe weakness, or trouble breathing
A cat that has not eaten for more than 24 hours
A soiled rear end with swelling, discharge, or a cat that cries when it tries to go
A large amount of hair loss with red, raw, or bleeding skin

For non-emergency but concerning signs, call your vet the same day. These include a sudden stop in grooming, a new bald patch, drooling, or a cat that seems painful when touched.

Safe Things You Can Do at Home While You Wait

You can help your cat without making things worse. Keep it simple and gentle.

Check the coat, skin, and rear end

Run your hands over your cat's whole body. A healthy coat has a natural gloss and springs back under your hand, with no bald patches, fleas, ticks, wounds, or unusual bumps [2]. Look closely at the back end, belly, and inner legs, since these are easy to miss.

Part the fur and check the skin. Note any redness, scabs, dandruff, greasy patches, or bare spots. Take photos so you can show your vet and track changes over time.

Do light, gentle brushing

Brushing removes loose hair and helps you spot problems early. Keep sessions short and stop if your cat seems uncomfortable. Some cats do not tolerate grooming, and if there is any chance of injury to you or your cat, have a professional groomer or your veterinarian handle it [2].

Skip the bath unless your vet says otherwise

Most cats do not need baths. If your cat is very dirty or got into something sticky or smelly, a bath may be needed, but follow steps that keep stress low [2]. If your cat is sick or in pain, ask your vet before bathing.

Address the basics

Keep the litter box clean, since a soiled rear end can worsen skin irritation.
Make sure food and water are easy to reach, especially for a stiff or overweight cat.
Note any changes in appetite, drinking, urination, or behavior.
Do not start any medication, supplement, or topical product without asking your vet.

What Your Veterinarian Will Check and Test

Your vet will start with a full physical exam. They will check the coat and skin, look for parasites, and feel for lumps, scabs, and tender areas [2]. They will also look at the teeth, gums, eyes, ears, and rear end.

Expect questions about when the grooming change started, how fast it happened, and whether your cat is eating, drinking, and using the litter box normally. Bring your photos and notes.

Depending on what they find, your vet may recommend:

Skin scrapings or tape tests to look for parasites
A fungal culture if ringworm is suspected
Blood work to check for hormonal or internal disease
Urine testing
Imaging such as X-rays or ultrasound if internal disease or cancer is a concern
A skin biopsy in some cases

Treatment depends on the cause. If the problem is pain, the plan targets the pain. If it is a skin infection, the plan targets the infection. Veterinary care for hair loss usually depends on finding and correcting the underlying disorder [5]. Your vet will calculate any medication dose from your cat's weight and health, so never use a dose meant for another pet or for a person.

Prevention and Monitoring

You cannot prevent every cause, but you can catch problems early.

Weigh your cat regularly and track the trend. Weight gain is a common reason cats stop grooming the back end.
Brush your cat a few times a week and check the skin at the same time [2].
Watch for changes in appetite, water intake, and litter box habits.
Keep up with dental care and routine vet visits.
Note any new itching, scratching, or hair loss, since cats hide itching well [3].
For senior cats, ask your vet about joint comfort at every checkup.

A kitten not grooming is a different situation from an adult cat. Young kittens learn grooming from their mother and may need time to develop the habit. If a kitten is dirty, dull, or not cleaning itself at all, have a vet check it, since young cats can get sick quickly.

Limitations and When to Contact a Veterinarian

This article covers common patterns, but every cat is different. A coat change can have more than one cause, and only a veterinarian who examines your cat can sort that out.

Contact your vet the same day if you notice a sudden stop in grooming, a new bald patch, drooling, bad breath, a soiled rear end, or a cat that seems painful when touched.

Go to an emergency clinic now for open wounds, severe weakness, trouble breathing, a cat that has not eaten for more than 24 hours, or a rear end that is swollen or discharging.

For a slow, mild change in an otherwise bright cat, a routine visit is reasonable. Do not wait weeks if the coat keeps getting worse.

Frequently Asked Questions

Why has my cat stopped grooming itself?

The most common reasons are pain, extra body weight, dental problems, skin issues, and internal illness. A cat that cannot reach its back end may be stiff or overweight, while a cat with a dull coat and other symptoms may have a medical problem. A vet exam is the fastest way to narrow it down.

Why is my senior cat not grooming?

Older cats often slow down because of arthritis, dental disease, or other age-related conditions. They may also have trouble reaching certain areas. Ask your vet about pain control and joint support at your next visit.

Why is my cat not grooming its back end?

This usually points to pain or a reach problem. Arthritis, obesity, and rear-end skin irritation are common causes. If the area is soiled, swollen, or smells bad, call your vet promptly.

Is it normal for a kitten not to groom much?

Young kittens are still learning, so some messiness is normal early on. A kitten that is dull, dirty, or not cleaning itself at all should be checked by a vet. Kittens can decline quickly, so do not wait if something seems off.

Can stress make a cat stop grooming?

Stress more often causes overgrooming and bald patches, but it can affect grooming in other ways too. Cats with a stress-related grooming disorder groom fewer body parts per session than healthy cats [1]. If your cat's routine has changed, look at recent changes at home and talk to your vet.

References

Exploring Normal to Abnormal Variations of Grooming Behaviours in Cats. Veterinary dermatology, 2026.
Cat Grooming Tips. ASPCA Animal Poison Control Center.
Hair Loss (Alopecia) in Cats - Cat Owners. Merck Veterinary Manual.
Skin Commensal Microbiota Does Not Influence the Clinical Course of Dermatophyte Infection in Persian Cats. Veterinary dermatology, 2026.
Alopecia management from a comparative perspective: pharmacological and pharmaceutical insights in humans, dogs, and cats. Frontiers in veterinary science, 2026.
Putative paraneoplastic alopecia in a cat with apocrine adenocarcinoma. Veterinary dermatology, 2025.
Delayed post-traumatic alopecia of the dorso-lumbar area following a road accident in a cat without pelvic fracture. The Journal of small animal practice, 2024.