Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Is My Cat Eating Cat Litter? 10 Vet-Reviewed Reasons

cat sniffing cat litter in the box

Cats are capable of doing many things that leave us feeling bewildered and scratching our heads. It’s often challenging to figure out if something that’s strange to us is actually normal for cats.

When it comes to eating cat litter, we can safely say that this isn’t normal behavior no matter how much your cat tries to make it seem normal. Eating cat litter is often associated with an underlying health issue that requires medical attention. Here are a few possible reasons why your cat may be eating cat litter and what you can do to help them stop this behavior.

divider single cat paw oct 2024

The 10 Reasons That Cats Eat Cat Litter

1. Pica

Pica refers to a condition where cats will chew or eat inedible materials and objects. Cats with pica are known to eat items like cardboard, plants, soil, and wood. They may also develop a habit of eating cat litter.

Pica can be caused by a variety of factors, it can be seen as a sign of an underlying medical condition or it can be a behavioral problem. Some medical conditions that have been linked to pica include endocrine diseases, gastrointestinal diseases, and parasitic infections.

cat sniffing cat litter
Image Credit: Lightspruch, Shutterstock

2. Dietary Deficiency

Sometimes, cats can start to eat cat litter and other materials due to a nutrient deficiency. They do this in an attempt to compensate for any essential nutrients that they lack in their daily diet. Therefore, it’s important to seek advice from your vet and ensure your cat is eating high-quality cat food and eating appropriate portions. Making healthy adjustments to their diet may put an end to your cat’s litter-eating habit.

Need veterinary advice but can't get to the clinic? Catster recommends PangoVet, our online veterinary service. Talk to a vet online and get the answers and advice you need for your cat without having to leave your living room — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money


3. Anemia

Anemia can be related to nutrient deficiencies, in particular iron deficiency, so some anemic cats may start to eat cat litter. Riboflavin, vitamin B12, and niacin deficiencies can also cause anemia.

Other signs of anemia include low energy, little stamina, pale gums, and lethargy. After a cat has been restored to health and any nutrient deficiency has been addressed, the cat litter-eating behavior usually goes away.

tabby cat sniffing the litter box
Image Credit: Pixel-Shot, Shutterstock

4. Curiosity

Cats are curious animals, so they might just be interested in playing with and tasting cat litter. Cat litter may feel fun or have a unique texture that cats want to taste. In most cases of curiosity, your cat will usually taste cat litter a couple of times before they become disinterested. So, if your cat continues to eat cat litter on multiple occasions, it’s safe to say that it’s not because they’re curious about it.


5. Flavor

Sometimes, cats can enjoy the flavor of their cat litter and develop a liking for it. This usually happens when their cat litter is made with natural materials like grass, wheat, or corn husks.

If your cat likes the flavor of their cat litter, you can try switching to another cat litter that’s made with a different material. You can also try providing them with cat grass as a safe alternative.

cat sniffing litter in the box
Image Credit: Duet PandG, Shutterstock

6. Coprophagia

Coprophagia refers to a condition that causes cats to eat their own feces. Cats with coprophagia may look like they’re eating cat litter, but they’re actually eating their own poop.

Coprophagia is often a sign of another underlying health condition, such as malnutrition, colitis, or dementia. Therefore, it’s important to get your cat your veterinarian if they start to eat their own poop.


7. Boredom

Cats who feel bored or stressed out may resort to eating cat litter. Eating litter may be a way for bored cats to feel stimulated, or it may be a habit that cats develop when they’re feeling stressed out or anxious.

Ensuring your cat gets enough exercise and playtime can help alleviate boredom. Providing mentally stimulating activities like treat dispenser toys can also prevent boredom. Alleviating boredom can cause your cat’s litter eating habit to go away on its own.

cat climbs to the litter box
Image Credit: Oleg Opryshko, Shutterstock

8. Hyperthyroidism

Sometimes, cats with hyperthyroidism may start to eat cat litter. The high levels of thyroid hormone can increase a cat’s appetite and metabolism, which can lead them to eating inedible objects like cat litter.

Hyperthyroidism is the most common endocrine disease in cats, and it’s most prevalent in older cats. Other signs of hyperthyroidism are weight loss, drinking more than usual, poor body condition, and an enlarged thyroid gland.


9. Brain Tumors

Brain tumors are a rare type of cancer and an uncommon cause of a cat eating litter. However, brain tumors can affect a cat’s behavior depending on their location and it’s possible for them to increase hunger.

Older cats who are over 10 years old have a higher risk of developing a brain tumor.

cat using the litter box
Image Credit: Danielle Masucci, Shutterstock

10. Intestinal Parasites

It’s not entirely clear what the link between intestinal parasites and pica is, but some cats with intestinal parasites, such as worms, will also develop pica. Cats may become continuously hungry, which can cause them to start eating inedible items.

Treatment will vary since there are different types of intestinal parasites. Once your cat is free from an intestinal parasite infestation, their pica also usually goes away.

divider 3 paws

Is It Safe for Cats to Eat Cat Litter?

It’s not safe for cats to eat cat litter, so it’s important to find effective solutions to prevent them from eating it. Some cat litter isn’t safe for consumption and can cause intestinal blockages. Clumping clay litter and silica litter are both types of cat litter that are particularly unsafe for consumption. It’s usually okay if a small amount gets in your cat’s mouth, but eating large amounts will cause complications in the gastrointestinal system.

Eating cat litter is also unsanitary. Ingesting parasites and bacteria from dirty cat litter can lead to gastrointestinal problems.

cat sitting next to the litter box
Image Credit: Oleg Opryshko, Shutterstock

How to Prevent Cats from Eating Cat Litter

The first step to preventing your cat from eating cat litter is to take your cat to your veterinarian. Since eating cat litter is often associated with a medical issue, it’s important to get your cat in for a physical exam. Your veterinarian may also run diagnostic tests to find the reason behind your cat’s litter-eating behavior. If your veterinarian finds a diagnosis, they’ll be able to provide a treatment plan to help your cat return to good health. In many cases, cats will stop eating cat litter once they’ve gotten better.

If your cat continues to eat cat litter, try switching to a different brand or type of cat litter. This can make the cat litter less palatable to your cat and discourage them from eating it. Make sure to also play with your cat regularly and distract them with another activity if you find them going to their litter box to eat cat litter.

divider 2 cats

Conclusion

Cats can start to eat cat litter for a variety of reasons, but this behavior is often tied to a health issue. Therefore, it’s best to get your cat to your veterinarian as soon as possible if you notice that they’re starting to eat cat litter. Your veterinarian can help you understand what’s causing this behavior and how you can prevent it from occurring.

Along with getting your cat medical help, it’s important to ensure they’re living a healthy lifestyle that consists of a nutritious diet, adequate amounts of exercise, and mentally stimulating activities. Prioritizing your cat’s wellness can prevent them from eating cat litter and developing other unsafe or unhealthy habits.


Featured Image Credit: Oleg Opryshko, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.


How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

2 Responses

  1. my kitty ???? cat ha not been, outside since she was just 6 months old so for 7& a half yrs she is just an inside kitty ???? cat only., and our other furry baby kitty ???? cat, tuxie is 8 months old & he is an outside kitty and an inside kitty ???? cat he is a sweet little boy who is very loving and enjoys to be cuddled and petted and loves to be given belly rubs and kisses.

    1. Hi Alyssia, thanks for sharing your story. Your kids sound amazing! Please consider sending us their pic for our cat of the week contest! You can use this link ???? https://www.catster.com/submit-your-cat/ Thanks for reading us!

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Will Ignoring My Cat Make Them Like Me? Here’s How They’ll Respond (Vet-Verified Info)

While cats are fun, some cats may also appear as aloof and independent. Sometimes, we wish they liked us more, which may be...

10 Best Scratching Posts for Kittens in 2026 – Reviews & Top Picks

Scratching is a natural need for cats, so before you bring your new kitten home, it’s a good idea to invest in at...

Short-Haired Cat vs. Long-Haired Cat: Vet-Verified Differences (With Pictures)

If you’re thinking about bringing a cat into your home but are unsure whether to choose a long-haired or short-haired breed, you’ve come...

Do Cats’ Personalities Change After They Are Neutered? (Vet Answer)

We all know that neutering is an important part of responsible cat ownership, but it’s understandable to wonder how it might affect the...

More related

How Often Do Cats Pee? Vet-Verified Facts & When to Worry

Just like people, how often cats pee each day can vary. It depends mostly on how much water they consume, their age, diet,...

10 Best Cat ID Tags in 2026 – Reviews & Top Picks

All cats should be equipped with an ID tag. Even if they aren’t regularly outside, you never know when they’re going to bolt...

6 Best Cat Window Guards & Screens In 2026 – Reviews & Top Picks

Cats love to sit on windowsills and watch the birds (or the neighbor’s cat). Some cats may even love the idea of going...

Does a Cat Scratcher Sharpen or Dull Nails? Vet Approved Tips & FAQ

A cat scratcher provides felines with a safe way to engage in their usual scratching behavior, which helps them maintain the health of...

Keep reading

Why Is My Cat So Affectionate All of a Sudden? 4 Vet-Reviewed Reasons

We can all agree that receiving affection from our cats is rarely a bad thing. However, if your cat is suddenly affectionate, you may be a bit suspicious as to why your cat won’t leave your side. Any little change...

tabby cat lying on a womans chest

Is My Cat Pregnant? 9 Vet-Approved Signs to Look For

Have you noticed some unusual behavioral or physical changes in your female cat? You’ve ruled out all potential options, but have you thought about pregnancy? If she is not spayed, she could be pregnant. Female cats go into heat cycles...

beautiful pregnant cat

How Do Cats Hunt & Kill Mice? Vet-Verified Hunting Techniques

Cats are natural predators, and their most famous prey in popular culture are mice. But how do cats hunt and kill mice, should you let them do it, and can they help prevent mice from living in your home? Cats...

a maine coon cat hunting a mouse outdoors

What’s the Price of Cat & Kitten Vaccinations in UK? 2026 Costs

Cat and kitten vaccinations are vitally important to every cat’s health. There are various types of vaccines, such as a kitten’s first vaccine or a frequent traveler cat that needs specialized vaccines for travel. This article will look at how...

Veterinarian giving injection to cat_Africa Studio_Shutterstock

What Vaccines Does My Cat Need? Our Vet Explains the Vaccine Schedule From Kittens Up

Cat owners recognize that providing nutritious food, fresh, clean water, and a comfortable and safe environment is essential for happy and healthy pets. Making sure your kitten or cat is up to date on their vaccinations is also crucial. Vaccines...

cat-having-a-vaccine

How to Shave a Cat’s Bum: 6 Vet-Approved Steps

If you’re starting to notice an unpleasant odor following your cat, and if you’re starting to see unpleasant remnants in their nether regions, it might be time for a sanitary trim. It’s not a fun process for anyone, but when...

cat being groomed and shaved at a salon

Can Cats And Dogs Drink From the Same Water Bowl? Vet Approved Facts & Tips

If you live in a multi-pet household and own both a cat and a dog, you may be wondering if these animals can share their water bowl. If your cat and dog choose to drink out of the same water...

Can Cats And Dogs Drink From the Same Water Bowl

10 Best Grain-Free Cat Foods in 2026 – Reviews & Top Picks

Cats can be picky eaters, making deciding what to buy challenging. Sometimes, it takes trial and error to find a cat food your cat will actually eat, and it may take a while to find something your cat will scarf...

Orange and calico cats with brown and white kittens eating from their food bowls