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.

10 Weird Cat Litter Box Habits (Vet-Approved Explanation)

Ginger cat sitting in a litter box

Cat litter isn’t everybody’s favorite topic, but it’s an important one, nonetheless. You’ve gotten used to your cat’s usual comings and goings and probably even noticed a few quirky behaviors related to your cat’s litter box(es). Every cat is unique, but some unique potty quirks are common enough to address.

Let’s dig into the weird stuff your cat does with their litter box, what it possibly means, and whether you should be concerned about it. Hopefully, with this information, you can better parse why your cat does the oddball things they do.

divider cats oct 2024

Top 10 Weird Cat Litter Box Habits

A Note From Our Veterinarian

The following habits are observed by pet owners frequently. However, the interpretation of these actions are, at times, the author’s opinion or anecdotal theories, and not yet scientifically proven.

1. Going Outside the Litter Box

It’s one of the most exasperating litter box-related mishaps: your cat poops right outside the litter box. Your first reaction might be to assume they’re mad at you, but they’re not. When your cat is unsatisfied with the litter box’s position, cleanliness, or type of litter, they might straight up refuse to use it. You’ll have to play a guessing game on what your cat’s issue is to solve the problem.

Sometimes, this happens simply because your cat cannot access the litter box. If the door leading to the room with the litter box is accidentally closed shut, your cat simply wouldn’t have a chance to use their litter box and would go elsewhere. Fixing such scenarios is relatively easy.

Going outside the litter box can also be associated with other health issues. Examples of such issues include arthritis (going inside the litter box is just too painful), urinary tract ailments, or even feline dementia. It goes without saying that the first thing you should do in such a scenario is seek veterinary care to rule out underlying medical issues.


2. Not Covering Their Business

Cats are known for covering their waste with fresh litter, but sometimes they’ll leave it exposed for a host of different reasons. Dominant, highly territorial intact males may sometimes leave their waste uncovered after using the litter box because they don’t feel the urge to hide their waste from predators. Other times, it can be indicative of a medical condition that makes going to the litter box and covering their waste painful or flat-out impossible. This is especially true for cats that have been declawed or cats that have had their nails covered with nail caps.

Certain kinds of musculoskeletal conditions, urinary tract ailments, paw or nail injuries, and more can make covering waste too much of a hassle, so your cat might skip it. This is definitely something to bring up to your vet.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money


3. Cat Litter Kicking

Litter kicking may occur because the litter box is too small for them to complete their natural digging and covering ritual, or because there is not enough litter for them to feel they can adequately cover their waste, leading to frustration. In some cases, a cat may be intensely testing the litter texture and depth before eliminating, or they may be exhibiting marking behaviors (especially if they are kicking soiled litter backward) due to stress, territory disputes, or an underlying medical issue like a UTI. For kittens, the behavior often stems from simple play or a lack of learning proper litter box etiquette from their mother.

To help remedy this issue, several simple environmental adjustments can be made to better accommodate your cat’s needs. The most effective solutions involve increasing the size or coverage of the box, such as getting a larger litter box so your cat can comfortably dig, using a box with higher sides, or switching to a covered litter box to physically prevent the litter from being kicked out. You should also ensure there is always enough litter in the box and that it is cleaned daily to satisfy picky “litter testers.” If the kicking seems related to marking behavior, you may need to address underlying stress or territory issues. If these simple fixes don’t work, it’s highly recommended to consult a veterinarian to rule out any medical reasons, such as a Urinary Tract Infection (UTI).

british shorthair inside top entry litter box
Image Credit: Nils Jacobi, Shutterstock

4. Guarding the Litter Box

If you have more than one cat, chances are you’ve seen one of your cats being overly protective or defensive of their favorite litter box. This is a natural territorial instinct to guard the locations where they eliminate their waste. In the wild, predators could smell their waste and use it to track them, but obviously, this isn’t a valid concern in your safe, comfortable home. Still, even amicable feline housemates can get a little possessive and hiss at each other over the best litter spots.

This phenomenon is known as resource guarding, and can extend to beyond the litter box. Cats can even guard their favorite sleeping spots, toys, scratching posts, or bowls. At times, they may even attempt to guard you and fight with other cats that attempt to get your attention. Not all cats display signs of resource guarding. However, it is definitely a warranted concern in multiple-pet households.

To help alleviate cat spats over litter box access, it’s necessary to have more than one litter box. The generally accepted rule of thumb is one litter box per cat, plus one extra. For instance, if you have 2 cats, you would need 3 litter boxes. Likewise, if you have 5 cats, you would ideally need at least 6 litter boxes. Keep note that this guideline is a minimum; more litter boxes are perfectly acceptable. More litter boxes mean your cats don’t have to worry about competing over them, ultimately leading to a more peaceful home for everyone.


5. Lying in the Litter Box

Cats without suitable sleeping spaces of their own might resort to sleeping in soft, fresh new litter after you change the box, but that’s not the only reason they might nap there. A cat suffering from a urinary tract ailment might also lie inside or near the litter box because the infection makes them frequently urinate. If your cat seems unusually attached to being near their litter box, first think about whether your cat has a suitable sleeping space of their own—say, a pet bed. If they do and they use it, it might be time to visit the vet to get some answers on whether something medically wrong could be the cause.


6. Using the Box After You Clean It

You probably clean your cat’s litter box pretty regularly, which you’d think your cat would appreciate. They definitely do enjoy having a clean litter box, but some people believe that it’s a little deeper than that. An anecdotal theory suggests that washing the litter box removes the scent of your cat’s waste. Even if they don’t really have to go potty at that moment, they might come running after you clean the box just to get their scent back on the litter box and establish it as theirs for other animals to smell. However, the argument against this theory is that a cat’s sense of smell is much more acute than a human’s; an inconspicuously “clean” litter box might not necessarily be scent-free from a cat’s point of view.

woman cleaning her pet cat's litter box
Image Credit: sandyman, Shutterstock

7. Avoiding Their Litter Box

Also called litter aversion, your cat might actively avoid their litter box if you suddenly start using a new type of litter they don’t care for. The biggest reason for this is that they don’t like something about the litter. Fine, pokey clay particles might be hurting their tender little paws, or perhaps they dislike the litter’s smell. It might just be time to change up the type of litter you use. Some cats do have a preference for a specific litter, while others don’t seem to mind using any type of litter. Knowing what your cat prefers requires knowing their personality.

The litter box could also be dirty from your cat’s perspective. Yes, that’s right, your cat could be picky about how clean their litter box is. Try just cleaning the box more frequently and see if your cat starts using the box again. You can also try moving the litter box to a quieter spot to see if they just crave more privacy when they do their business.


8. Using the Side of the Box

If your cat is eliminating on the sides of their litter box, the box is likely too small for them. At times, the litter box might be too small for your cat to get in position, eliminate their waste, and cover it up comfortably. Try investing in a bigger litter box that gives your cat more space to squat and do their thing without feeling cramped. A larger box with higher sides could be just what you need to make your cat happy with the litter box situation again.


9. Playing in the Litter

Kittens might find themselves playing in their litter, which is pretty weird and gross to us humans. They could also just be playful and simulate natural digging behaviors. For example, cats dig in the wild to pursue small prey like voles. Scratching in the litter may also satisfy their natural urge to scratch, helping to keep their claws dulled down. Sometimes a cat might hide in a covered litter box and lie in wait for unsuspecting passersby, feline, or human.

kitten playing inside litter box
Image credit: Natalia Kokhanova, Shutterstock

10. Running Away From the Litter Box

If you have a particularly skittish cat, they might find a loud litter box as an intimidating object. This is most commonly seen in cats who aren’t accustomed to a robotic litter box. The noises of the internal machinery cleaning up their business shortly after they finish can send them scurrying, and might make them more uncertain about using the litter box the next time they want to relieve themselves.

It’s also sometimes seen in cats that are spooked right after they use a litter box (either inadvertently or on purpose). They might associate the litter box with a negative experience and run away from it in the future.

Some cats have a preference for hooded litter boxes over non-hooded ones (or vice versa), and may avoid the litter box they don’t have a liking for. It generally takes some experimentation before figuring out what your cat prefers.

This issue is most commonly reported by those who adopt adult cats. Kittens can often be acclimated to a litter box much more easily. If you adopt an adult cat, it sometimes helps to ask their former caretakers as to what type of litter and litter box they use. Though it might sound strange, many people advise adopting your cat’s litter box as well when you bring them home. Though it sounds like a smelly and weird prospect, it would definitely be appreciated by your new pet!

divider cats oct 2024

Conclusion

Cats naturally do some pretty crazy stuff with their litter box, from guarding it from other cats to lying in the box to refusing to cover their waste. In a lot of cases, it’s driven by natural instincts, like hiding from predators, but other times, it’s stress, simple feline curiosity, or perhaps a medical condition. It’s important to watch your cat for any sudden or concerning litter box habits to preclude certain medical problems and help them keep a healthy routine. As always, if you do suspect a medical issue, you shouldn’t hesitate to reach out to your vet for more information and clarity.


Featured Image Credit: Lightspruch, 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

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

Sphynx Cat Breed: Info, Pictures, Temperament & More

It’s hard not to instantly recognize the Sphynx cat, with their sleek bare bodies and their mesmerizing eyes. These kitties are cute, cuddly,...

7 Best Halloween Costumes for Cats in 2026: Reviews & Top Picks

Our pets are part of the family, and generally, getting dogs on board with dress-up days is easier than cats. That means our...

10 Best Natural Cat Litters in 2026 – Reviews & Top Picks

When caring for your feline friends, choosing the right litter can be just as important as finding the perfect food. Today, we bring...

Do Cats Have a Clitoris? Feline Reproduction Facts & FAQ

If you’ve ever wondered if female cats have clitorises, the answer is yes; it’s an anatomical part shared by all female mammals! Fetuses...

More related

Why Do Cats Like Chin Scratches? 9 Vet-Reviewed Reasons

If you own a cat, you know that cats love chin scratches. You’ve probably noticed that they will rub their cheeks against your...

Are Geckos Poisonous to Cats? Vet-Reviewed Dangers & FAQ

Geckos are not venomous or poisonous to cats and dogs, but they can carry a liver fluke, the trematode parasite Platynosomum fastosum, which...

Do Cats’ Waters Break During Labor? Our Vet Explains Feline Pregnancy Facts

Whether you’ve experienced it yourself, know someone who has, or watched it on practically every sitcom in existence, you know what it means...

My Cat Is Pressing Their Head Against Me, Should I Worry? Vet-Approved Facts, Causes & Care Tips

Cats show their affection in funny ways, including rubbing or head-butting you or other pets. They like to rub or bump their head...

Keep reading

When Are a Cat’s Teenage Years? Vet-Reviewed Facts & Useful Tips

Just like humans, cats go through a stage that tends to correlate with “teenage” behavior. Some of it is cute and funny, and some of it is irritating and frustrating. Fortunately, the cat teenage years are not all bad, and...

Bengal kitten playing

Is It True That All Cats React to Catnip? Vet-Reviewed Facts & FAQ

Catnip is one of the most widely marketed products for our feline companions. It might be a thought in your mind that no cat could resist the effects of this herbal wonder. However, is that really true? Does catnip woo...

cat with green eyes in catnip

How to Calm a Stressed Cat After Moving: 17 Vet-Verified Tips

Did you know that moving is considered one of the most stressful life events humans can go through? It’s true, but it’s not just us that moving impacts. Our pets can be extremely stressed out by the entire process, and...

woman-petting-her-cat

Why Do Cats Put Their Butt in Your Face? 4 Vet-Reviewed Reasons for This Behavior

Have you ever been put in the awkward situation of having a cat’s butt right in your face? You could be minding your own business and reading or working on your laptop, and suddenly, your cat jumps up and gives...

Mekong Bobtail Male Cat

How Do Cats Communicate With Each Other? Vet-Verified Facts & Info

Most mammals, including cats, are able to communicate, although non-verbally. Cats have developed forms of inter-cat communication over the millennia; some are vocal, some are physical, and others are chemical. Cats do it well in whatever form of communication they...

two cats touching noses

How Long Will Cats Hide If They’re Scared: Vet-Reviewed Causes, Tips & FAQ

Cats can be very fearful creatures, and when they feel threatened or scared, their natural instinct is to hide. In fact, you may have even brought a new cat home for the first time only for it to run and...

British shorthair cat hiding

How to Tell If My Cat has a Fever: 10 Vet-Reviewed Signs

For us, it’s easy to tell if we have a fever by feeling our foreheads or using a thermometer. Unfortunately, it’s not as simple as a pet parent when you think your cat is sick and might have a fever....

man holding himalayan cat

Cat Lymph Nodes: Vet-Verified Health Facts, Guide & Diagram

Lymph nodes are present in humans and cats, but most of us are not aware of their existence unless there’s a problem. They play a crucial role in preventing infections in cats, but unfortunately, lymph node diseases are fairly common....

Hands checking cat with lymph nodes

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.