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

Share

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

Ask Dr. Paola – Help! My Male Cat Gets Into Fights! (March 9, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Why Your Cat’s Poop Smells Like a Biohazard

Nobody enjoys litter box duty, but sometimes it gets unbearable. The smell hits you from across the room. You’re scooping faster, lighting candles,...

RIP Your Furniture? Not With This Guide to Cat Scratch Damage Control

Your couch looks like it survived a minor apocalypse. The curtains have mysterious vertical shreds. That new rug you splurged on is already...

Celebrating 15 Years as the Most Popular Resident of No. 10 Downing Street

For almost 300 years, a rather unassuming Georgian building of black bricks with a shiny black door has been the official residence and...

More related

Is It True That All Cats Kill Mice? Vet-Reviewed Facts & FAQ

For millennia cats and humans have lived together in the same homes, and one of the many reasons for this is rodent control....

How to Hike With a Cat: 10 Vet Approved Tips

The chances are that most of the nearly 32 million pet cats in the United States spend their lives indoors. Statistics show that...

PETKIT Purobot Ultra Litter Box Review 2026: Our Hands-On Test

Whether you have multiple cats and are looking for a better way to deal with litter odor or are worried your cat might...

Feeding Baby Food to Cats: What’s Safe and What’s Toxic

You’re feeding your baby some pureed chicken, and your cat materializes out of nowhere, sniffing the air with intense interest. On impulse, you...

Keep reading

How to Clean a Cat Bowl: 8 Easy Steps & Vet-Reviewed Precautions

A cat bowl is easily one of the most important pieces of equipment for a cat owner. Just like humans, cats are affected by food-borne illnesses, most commonly caused by bacteria such as Salmonella, E.coli and Listeria. These illnesses can...

hepper nom nom cat bowl

Can Cats Eat Pesto? Vet-Approved Risks & Safe Alternatives

Pesto is a household staple used in various foods, such as salad dressing, pizza, and chicken—the possibilities are limitless! If you’re a cat owner, you may have noticed your feline nosing around when you bust out this sauce, but is...

Can Cats Eat Pesto

Can Cats Get Laryngitis? Vet-Verified Health Facts

Your usually vocal cat suddenly struggles to find their voice. They open their mouths, but either nothing comes out at all, or all they’re able to muster is a quiet, raspy meow; what gives? They could be dealing with feline...

Cat-meowing

10 Best Brushes for Maine Coon Cats in 2026 – Reviews & Top Picks

While the Maine Coon is one of the largest domesticated cat breeds out there, it is also one of the most difficult to groom. These cats have beautiful, flowing locks that any pet parent can be proud of. Unfortunately, these...

silver-tabby-turtle-maine-coon-female-lies-on-a-light-background

Does Palmolive Kill Fleas on Cats? Vet Reviewed Effectiveness & Safety Explored

Fleas are the bane of every pet owner’s existence. They’re not only a nuisance for you, but they can cause itching and discomfort for your cat. Worse yet, fleas can carry diseases that can be serious. If your cat gets...

tabby cat taking a bath

Why Does My Cat Run Away From Me? 10 Vet-Reviewed Reasons & How to Stop It

If you have a cat that keeps running away, it can be a scary and frustrating experience, even if they always come back. If you are looking for ways to prevent this, you’ve come to the right place. Here are...

scared British blue-point cat hiding under the bed

Why Do Cats Have a Henry’s Pocket? What Is It For? Vet-Verified Info

Henry’s Pocket is the little flap of flesh you see on the outer part of a cat’s ear. Cats’ outer ears resemble triangles and are called pinnae. On the outside of the pinna, there’s a small pocket close to the...

close up cat ears pinna

Why Is My Cat Not Drinking Water? Vet-Reviewed Reasons & Solutions

Keeping our cats hydrated can be a bit tricky. Cats are notorious for not drinking enough, so we need to find ways to ensure that they are ingesting enough water to stay healthy. But what if your cat doesn’t seem...

bengal-cat-playing-waterin-the-bowl

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.