Why Cats Eat Cat Litter: Causes, Consequences, and How to Stop This Behaviour

Many cat owners have encountered this puzzling and worrying behaviour: their feline friend eating cat litter. This phenomenon, known as pica-the urge to eat non-food items-can be quite concerning for pet parents. Indeed, litter consumption isn’t just odd behaviour; it can pose real health risks to your cat.

Let’s explore this issue thoroughly and answer the questions that worry many cat owners: why do cats eat litter, what dangers does this present, and how can you effectively prevent this troubling behaviour.

Key Reasons Why Cats Eat Litter

Reason 1: Curiosity and Exploration

Kittens and young cats naturally explore their world through all their senses, including taste. Cat litter might seem like an interesting new substance worth investigating-especially common in kittens aged 3 to 6 months. The texture and appearance of certain litters can trigger playful behaviour, and during these exploratory moments, cats may accidentally swallow small amounts of litter.

It’s important to understand that if this behaviour continues beyond kittenhood, it may indicate other underlying issues. In such cases, pay close attention to your cat’s diet, overall health, and emotional wellbeing.

Reason 2: Nutritional Deficiencies

Sometimes, litter eating can signal that your cat is missing important nutrients from their diet. Addressing these deficiencies often resolves the problem.

• Anaemia: This is the most common medical cause. Cats with anaemia may crave mineral-rich substances, including certain types of litter. Watch for signs like pale gums, tiredness, poor appetite, and difficulty breathing. Anaemia can develop from parasites, ongoing health issues, or not getting enough iron in their diet.

• Other Nutrient Gaps: Your cat might also be lacking calcium, magnesium, or B vitamins. This often happens with unbalanced diets or when the body can’t absorb nutrients properly. For example, homemade diets without proper supplements might not provide everything your cat needs, leading to unusual eating habits. If you suspect nutritional issues, it’s worth reviewing your cat’s diet with your vet and considering appropriate supplements.

Reason 3: Health Problems

Various medical conditions can change how cats behave around food, including making them eat litter. This behaviour might signal serious health issues that need veterinary attention.

• Digestive Problems

Stomach upsets, inflammatory bowel disease, or other digestive issues can make cats feel nauseous and change what they want to eat. Problems with the pancreas or liver can also affect how well your cat absorbs nutrients, potentially making them seek out unusual things to eat, including litter.

• Diabetes

Cats with diabetes often drink more water and feel hungrier than usual. This condition might drive them to look for alternative food sources, even things they shouldn’t eat. Eating litter could be their way of trying to satisfy that constant hunger or get nutrients they feel they’re missing.

• Overactive Thyroid

When a cat’s thyroid gland works too hard, it speeds up their metabolism and makes them extremely hungry. Cats with this condition might show interest in non-food items, including litter, as they try to satisfy their seemingly endless appetite.

• Cancer

Cancer can cause complex changes in how cats behave and process food. Strange eating habits, like consuming litter, can be one sign of cancer, especially when you notice other changes in your cat’s condition.

• Kidney Disease and Other Conditions

Kidney disease is common in older cats and can cause various problems in how their body functions, including changes in eating behaviour. When the kidneys aren’t working properly, cats might eat inappropriate things like litter as their body tries to balance itself out.

Reason 4: Stress and Boredom

Your cat’s emotional state plays a huge role in their behaviour. Stress and boredom can lead to unusual habits, including eating litter.

• Stress-Related Eating

Cats are sensitive souls, and changes in their environment can easily upset them. Common stress triggers include:

• Moving to a new home 

• New family members (people or pets) joining the household

• Building work or major changes to their surroundings 

• Changes in daily routines

When cats feel stressed, they might eat litter as a way to comfort themselves. It’s similar to how some people bite their nails or eat when they’re anxious-it’s a coping mechanism.

• Boredom Problems

Indoor cats, especially those who spend long hours alone, can get really bored. When cats don’t have enough interesting things to do or think about, they might develop odd habits like eating things they shouldn’t.

If your cat feels lonely or isn’t getting enough attention from you, they might start eating litter partly to get your notice. It’s their way of saying “Hey, look at me!”

Reason 5: The Type of Litter You Choose

Some cat litters are simply more tempting to eat than others. Here’s what you need to know about different types:

Litter Type	Risk Level	What Happens If Eaten
Zeolite	Low-Medium	Natural mineral that doesn’t swell, but may irritate mouth and throat
Paper-based	Medium	Expands quickly when wet, which can cause blockages
Wood pellets	Medium	Swells when moist, risking constipation or blockages
Corn-based	High	Natural and partly digestible, but still not safe in large amounts
Silica gel	Low-Medium	Makes crackling sounds when wet, absorbs moisture-can be toxic
Clay	Medium-High	Clumps and expands inside the body-serious blockage risk

Natural Litters Can Be Too Appealing

Litters made from natural materials like corn, wheat, walnut shells, or grass often smell quite appetising to cats. Their texture and scent can be so similar to food that some cats get confused and think they’re edible. 

Texture Matters Too

Fine-grained litters that feel like sand or soil can trigger your cat’s natural digging instincts. Some cats find the texture so interesting that they start by pawing at it, then progress to tasting it.

Reason 6: Age-Related Changes

Older cats may start eating litter due to various changes that come with aging. These changes affect both their physical abilities and mental sharpness.

• Fading Senses

As cats get older, their senses naturally decline. Their eyesight might not be as sharp, and their sense of smell can weaken, making it harder for them to recognise their usual food. Changes in taste buds can also lead to unusual food preferences. If your senior cat can no longer smell or taste their regular food properly, they might turn to litter as an alternative.

• Cognitive Changes

Some older cats develop cognitive dysfunction syndrome, which is similar to dementia in humans. This condition can cause confusion, memory problems, and changes in normal behaviour patterns. Cats with this condition might start eating inappropriate things like litter because they’re disoriented or have forgotten what’s food and what isn’t.

• Multiple Health Issues

As cats age, they’re more likely to develop health problems like kidney disease, diabetes, overactive thyroid, or arthritis. Sometimes cats have several conditions at once, which makes things more complicated. Eating litter might be an early sign that something else is going on with your senior cat’s health, even if you haven’t noticed other symptoms yet.

Health Risks and Consequences of Litter Consumption

Eating cat litter can be dangerous for your feline friend. Since litter isn’t meant to be eaten, swallowing it can lead to several serious health problems. It’s important to understand these risks and know when to seek emergency veterinary help.

1. Digestive Problems

When cats eat litter, it can upset their digestive system in several ways:

• Vomiting – Your cat’s natural response to getting rid of something that shouldn’t be in their stomach

• Constipation – The litter can harden inside their intestines, making it difficult or impossible to pass stools normally

• Diarrhoea – The litter can irritate the lining of their intestines, causing loose, watery stools

2. Poisoning from Chemicals

Some types of litter contain chemicals that can be harmful to cats:

• Scented litters may contain essential oils or artificial fragrances that are toxic to cats. Signs of poisoning include excessive drooling, vomiting, diarrhoea, difficulty walking or balancing, and general weakness.

• Odour-control litters often contain boric acid or other chemicals that can irritate your cat’s stomach and potentially damage their liver or kidneys. Unlike them, zeolite neutralizes odors due to its natural properties, without the use of chemical additives.

• Silica gel litters can cause dehydration and upset your cat’s body chemistry if eaten. These crystals can also cause chemical burns in your cat’s mouth and throat.

3. Intestinal Blockage

This is especially dangerous for kittens and young cats because their intestines are smaller. Swallowed litter can get stuck inside their intestines, causing a partial or complete blockage. This is a medical emergency that requires immediate surgery.

Emergency Warning Signs-Call Your Vet Immediately If You See:

• Repeated vomiting – especially if it continues for more than 24 hours or contains blood

• Won’t eat or drink – refusing food and water for more than 24 hours

• Swollen or painful belly – bloating or your cat crying when you gently touch their stomach

• No bowel movements – not using the litter tray for 24-48 hours, especially if they keep trying but nothing comes out

• Extreme tiredness – much less active than usual or not responding to you normally

• Pale or blue gums – indicating serious circulation problems or poisoning

• Trouble breathing – difficulty breathing or coughing, which might mean litter got into their airways

• Blood in urine or stools – a sign of internal damage

• Seizures or loss of consciousness – extremely serious symptoms that need emergency treatment immediately

4. Prevention and How to Stop the Problem

To reduce the chances of your cat eating litter, you’ll need to take several preventive steps and create the right environment for your feline friend. Here are some proven strategies:

Choose the Right Litter Pick safe, low-dust litters, especially if you have kittens, senior cats, or cats that tend to eat non-food items.

Keep the Litter Tray Clean Clean the tray regularly and change the litter frequently. Dirty litter trays might actually encourage your cat to investigate because the smell and texture change when mixed with urine and waste.

Feed a Balanced Diet Make sure your cat gets high-quality, complete nutrition approved by vets. Always provide fresh water and consider supplements if your vet recommends them.

Keep Your Cat Entertained Provide plenty of toys, climbing trees, scratching posts, and puzzle feeders to keep your cat mentally and physically busy. A well-stimulated cat is less likely to develop stress-related or attention-seeking behaviours.

Regular Vet Check-ups Schedule routine health checks to catch any medical problems early that might be causing the litter-eating behaviour.

If you suspect your cat has eaten litter, contact your vet immediately. Quick treatment can prevent serious complications and keep your cat safe.

How to Stop Your Cat from Eating Litter

Stopping litter consumption requires trying different approaches to find what works best for your individual cat and the reasons behind their behaviour.

1. Switch to a Better Litter

Choosing the right litter can make a huge difference in reducing your cat’s desire to eat it while still keeping them happy with their litter tray.

Natural Options:

• Wood pellet litter: Made from compressed sawdust; swells up when wet, which could cause problems if eaten in large amounts.

• Corn-based litter: Biodegradable and less toxic than some alternatives, but the natural grain smell might actually attract some cats to taste it

• Wheat-based litter: Can be partially digested if eaten, though the appealing scent might encourage some cats to try it

Alternatives:

• Silica gel crystals: Less appealing to eat due to their texture and moisture-absorbing properties, but can cause dehydration if consumed

• Recycled paper litter: Soft texture that’s less tempting to eat, though it doesn’t control odours as well as other types

Our Top Recommendation:

Zeolite-based litter is your best bet if your cat has a litter-eating problem. This natural mineral litter controls odours brilliantly, doesn’t contain harmful chemicals, and has larger granules that are less appealing to eat and harder to swallow accidentally.

Change the litter gradually by mixing the new one with the old over several days to give your cat time to adjust to the changes. If you choose zeolite litter, its natural properties will not only help solve the eating problem but also ensure your pet’s comfort and safety.

2. Improve Your Cat’s Diet

Sometimes cats eat litter because they’re missing important nutrients in their diet. Improving what they eat can solve the problem while boosting their overall health.

Feed a Complete, Balanced Diet:

• Choose quality food: Pick vet-recommended foods that are right for your cat’s age, weight, and health condition

• Ensure plenty of protein: Make sure your cat gets enough high-quality animal protein-cats are natural meat-eaters and need it to stay healthy

• Add healthy fats: Include omega-3 fatty acids to support healthy skin, coat, brain function, and immune system

Consider Supplements:

• Talk to your vet first: Get professional advice about vitamin and mineral supplements, especially if blood tests show your cat has specific deficiencies

• Try probiotics: These beneficial bacteria can help improve digestion and help your cat absorb nutrients better

Smart Feeding Schedule:

• Multiple small meals: Feed your cat several smaller meals throughout the day rather than one or two large ones. This keeps them satisfied and less likely to seek out unusual things to eat.

Important Note: Make any diet changes gradually over a week or two to avoid upsetting your cat’s stomach. Always work with your vet, especially if your cat has existing health problems or special dietary needs.

3. Keep Your Cat Active and Entertained

Cats often eat litter when they’re bored or stressed. Giving them plenty of interesting things to do can redirect this behaviour while tackling the root cause of boredom or anxiety.

Interactive Toys and Games:

• Food puzzle toys: These make your cat work for their food, keeping their mind busy and making meals last longer

• Motion toys: Balls with bells inside and battery-powered toys encourage your cat to play on their own and satisfy their hunting instincts

• Laser pointer fun: Great for exercise, but always end the session by letting your cat “catch” the red dot to give them that satisfying feeling of a successful hunt

Make Your Home Cat-Friendly:

• Climbing opportunities: Set up tall scratching posts and cat trees so your cat can climb and perch up high-it’s what they naturally love to do

• Safe hiding spots: Create cozy resting places at different heights where your cat can retreat when they want to feel secure

• Rotate toys regularly: Don’t leave all toys out all the time. Switch them around every few days to keep things interesting and exciting

Daily Play Time:

• Interactive sessions: Spend time each day playing with your cat using toys you control-it strengthens your bond and gives them essential exercise

• Hunting games: Use feather wands and string toys to mimic real hunting. This is especially important for indoor cats who don’t get to hunt naturally

Pro Tip: Try to play with your cat just before meal times. This copies their natural pattern of hunt-then-eat, making meals more satisfying and reducing attention-seeking behaviours like litter eating.

4. When to See Your Vet

If your cat keeps eating litter despite trying the steps above, it’s time for professional help. Your vet can rule out medical problems and create a proper treatment plan.

What Your Vet Will Check:

• Digestive system: Look for stomach or intestinal problems that might be causing the unusual eating behaviour

• Blood tests: Check for nutrient deficiencies, hormone imbalances, or other health issues that might be driving the behaviour

• Senior cat screening: Older cats get extra thorough check-ups since they’re more prone to age-related health problems

Treatment Options Your Vet Might Suggest:

• Environmental changes: Your vet can advise on home modifications and may recommend calming pheromone diffusers

• Specialist help: In stubborn cases, you might be referred to an animal behaviourist who specialises in solving these kinds of problems

Medical Treatment:

• Treating underlying conditions: If your cat has diabetes, thyroid problems, or kidney disease, treating these will often solve the litter-eating issue

• Anti-anxiety medication: In some cases, your vet might prescribe medication to help with stress or anxiety-related eating behaviours

Don’t Wait-See Your Vet Immediately If: Your cat is eating litter AND showing other symptoms like vomiting, diarrhoea, extreme tiredness, or refusing to eat. Quick action from your vet can prevent serious complications and keep your cat safe.

Additional Helpful Tips

• Keep It Clean: Clean your litter tray daily and remove waste promptly. A clean tray is always more appealing to your cat.

• Redirect the Behaviour: If you catch your cat eating litter, distract them with a favourite toy or treat. Consider offering cat grass as a safe alternative for their nibbling needs.

• Reward Good Behaviour: Praise your cat when they use their litter tray properly. Never scold them for accidents-this can create stress and worsen the problem.

• Multiple Cat Households: Provide enough litter trays for all your cats (one per cat, plus one extra). Different cats may prefer different tray styles.

• Keep a Record: Note when the litter eating happens-this can help you spot patterns or triggers.

• Location Matters: Place litter trays in quiet, easily accessible spots where your cat feels safe and comfortable.

• Try Different Trays: Some cats prefer covered trays, others like them open. Experiment to find what works best for your feline friend.

• Size Matters: Ensure the tray is large enough for your cat to move around comfortably.

• Regular Health Checks: Keep up with routine vet visits and mention any unusual behaviours.

Every cat is unique, so what works for one might not work for another. Be patient and willing to try different approaches. With consistency and the right products, you can solve this problem and keep your cat healthy and happy.

People ask

Litter eating is a serious problem that needs your attention and a thorough approach to solve. By understanding why it happens and using the right methods, you can significantly improve the situation and keep your cat healthy and happy. Your patience and effort will be rewarded with a stronger bond and many wonderful years with your feline friend.