Open vs. Covered Litter Boxes: What Cats Prefer and How to Stop Dogs From Eating Cat Poop

Cat-first litter box guide

A covered litter box may slow down a determined dog—but that does not automatically make it the right bathroom for your cat. Here is the practical, cat-first way to choose a box, introduce an open setup, and keep the canine snack patrol out.

Siamese cat sitting comfortably in a roomy open-top high-sided litter box — A roomy open-top litter box gives a cat space to turn, dig, and keep an eye on the surrounding room.

The longer answer is a little more nuanced. Not every cat hates a hood, and one controlled study of 28 cats found no overall group preference between covered and uncovered boxes. Four cats preferred covered boxes, four preferred uncovered boxes, and most used both. In other words, individual preference matters. You can read the study abstract on PubMed.

Still, an open litter box is the safer default for many homes. It gives a cat more usable room, better airflow, a clear view of approaching pets, and an easy way out. Veterinary guidance from The Ohio State University also notes that cats generally prefer large, uncovered boxes. The point is not that every covered box is bad. The point is that the cat—not the dog—should get the deciding vote.

The practical verdict

Choose the litter box around your cat's comfort and mobility. Then use placement, barriers, cleaning, and dog training to solve the poop-eating problem separately.

Open vs. Covered Litter Boxes: The Honest Comparison

Open litter box

Clear sight lines and an easy exit
Better airflow and less trapped odor
Easier for large, senior, or cautious cats
Easier to inspect and scoop
More visible litter scatter—and easier dog access

Covered litter box

Contains some litter scatter
Looks tidier to many humans
May discourage larger dogs
Can trap odor and dust at cat-nose level
May feel cramped or leave only one escape route

A hood is usually designed around human problems: seeing waste, smelling waste, sweeping litter, or blocking the dog. Your cat is evaluating something else entirely: Can I turn around? Can I dig? Can I see who is coming? Can I leave without being cornered?

That difference explains why “my cat uses the covered box” is not quite the same as “my cat prefers the covered box.” Cats are adaptable. Some will tolerate a setup until discomfort, age, constipation, urinary pain, a new pet, or one badly timed ambush makes the box feel unsafe.

4FurBaby XXL stainless steel cat litter box

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Why Many Cats Feel More Comfortable in an Open Box

Using the bathroom is a vulnerable moment. In a multi-pet home, a cat may want to see the dog, another cat, a noisy toddler, or the robot vacuum before any of them gets close. An open box provides information and options. A small covered box can remove both.

Airflow matters too. A lid may hide odor from across the room while concentrating it inside the box. Imagine a portable toilet that has not been serviced recently; closing the door does not make the inside fresher. Daily scooping matters far more than a plastic hood.

Size is the other common issue. The outer dimensions of a covered box can look generous while the usable interior is cramped. Current feline guidance often recommends a box roughly one and a half times the cat's body length, measured from nose to the base of the tail. A high-sided open pan can provide generous floor space and scatter control without putting a ceiling over the cat.

A cat positioned partly inside a covered litter box — A cat hanging partly outside a covered box can be a size, comfort, or mobility clue—not “bad behavior.”

Signs Your Cat May Not Like the Covered Box

They sniff the entrance repeatedly but hesitate to go inside.
They keep part of their body outside or do not turn around normally.
They rush out as soon as they finish.
They stop covering waste, urinate over the edge, or choose a nearby rug.
They use the box normally as soon as the flap or lid is removed.
Another pet waits near the single exit and blocks them.

One sign by itself does not prove that the lid is the problem. A sudden litter box change can also point to pain or illness. Straining, frequent trips with little urine, crying in the box, blood, or an abrupt refusal to use a previously accepted box deserves prompt veterinary attention—especially because urinary blockage can be an emergency.

How to Stop a Dog From Eating Cat Poop—Without Closing In the Cat

Dogs eating feces is called coprophagia. It is disgusting to us, but it is not rare dog behavior. The best first move is access control: VCA Animal Hospitals recommends preventing access to stool, cleaning thoroughly, and supervising consistently. That is more reliable than repeatedly yelling “leave it” after the dog already has the prize.

Solution	Best for	Watch out for
Baby gate with a cat-size opening	Medium and large dogs	Small dogs may fit through the opening
Door strap or latch	Bathrooms, laundry rooms, and renters	The gap must be wide enough for the cat and secure against pinching
Cat-only room or closet	Homes with an available low-traffic space	Keep ventilation, lighting, and an easy exit
Elevated litter station	Healthy adult cats with larger dogs	Not ideal for kittens, seniors, or cats with joint pain
Frequent scooping	Every household	Helpful, but not a substitute for a barrier when nobody is home

Use a physical barrier first

My favorite practical setup is boring in the best way: a large open box in a quiet room, plus a gate or door latch the cat can pass but the dog cannot. The cat keeps the bathroom it likes; the dog loses access. No complicated box engineering required.

Teach “leave it,” but do not make it the only safeguard

Practice with low-value items before working near the litter area. Reward the dog for turning away and checking in with you. Do not chase, shout, or pry the dog's mouth open unless safety requires it; that can accidentally turn the behavior into a fast, competitive game. When you cannot supervise, use the barrier.

Scoop on a predictable schedule

Check the box at least morning and evening, and more often in a multi-cat home. Quick removal reduces opportunity for the dog and keeps an open box pleasant for the cat. If the poop-eating starts suddenly, becomes compulsive, or comes with weight loss, vomiting, diarrhea, or a dramatic appetite change, call your veterinarian.

Small-dog reality check: if your dog can fit through the same cat opening, a standard pet gate will not solve the problem. Use a height difference only if your cat is comfortably mobile, or create a two-stage entry with furniture or a second barrier that prevents a straight path to the box.

How to Train a Cat to Use an Open Litter Box

“Train” is almost the wrong word. Most cats already know what litter is for. Your job is to make the open box easy to find, comfortable to enter, familiar underfoot, and reliably clean.

Pick a genuinely large box. Your cat should be able to enter, turn around, dig, and squat without touching every wall. Choose a low entry for a kitten, senior cat, or anyone with mobility limitations; use high sides elsewhere if your cat sprays or enthusiastically excavates.
Keep the familiar litter. Do not change the box style, litter texture, scent, depth, and location on the same day. Start with the unscented litter your cat already accepts so you only test one variable.
Put the new open box beside the old one. Give the cat a real choice for at least several days. A small scoop of clean, used litter can make the new box smell familiar without making it dirty.
Choose quiet, not trapped. Avoid washing machines, slamming doors, food bowls, busy hallways, and corners where another pet can block the exit. Quiet privacy and an open view can exist at the same time.
Let curiosity do the work. Do not carry the cat over and force their paws into the litter. If they inspect or step into the new box, stay calm. Reward after they leave if your cat enjoys treats, but do not hover while they use it. Never confine your cat in the box or repeatedly place them inside after an accident. That can make the litter area feel like a punishment.
Scoop at least daily. Many open-box “failures” are really cleanliness failures. Remove clumps and stool, top up the litter as needed, and wash the pan with mild, unscented soap rather than strongly perfumed cleaners.
Remove the old box gradually. Once the cat uses the open box consistently, take away the old box. If they stop, bring it back and slow the transition. A setback is information, not stubbornness.

If your cat avoids both the old and new boxes, urinates more or less often than usual, or shows discomfort while squatting, pause the transition and contact your veterinarian.

Open-top high-sided stainless steel litter box placed in a bright living room — A quiet, open setup can fit naturally into the home while preserving airflow, visibility, and an easy exit.

What I Would Skip

A tiny hooded box marketed as “space-saving.” It saves human space by taking usable space away from the cat.
A top-entry box chosen only to defeat the dog. It can work for athletic adult cats, but it is a poor universal solution for kittens, seniors, large cats, and cats with arthritis.
Moving the litter box onto a high shelf without a transition. If your cat ever becomes injured or stiff, the bathroom can suddenly become inaccessible.
Scented litter plus a deodorizer inside a covered box. What smells “clean” to you may be overwhelming at nose level.
Punishing either pet. The cat is not being dramatic, and the dog is not plotting against you. Change the environment so the correct behavior is easier.

My Practical Setup Recommendation

For most cat-and-dog households, I would start with a roomy open litter box, high sides where appropriate, unscented litter the cat already likes, and a washable mat. Put it in a quiet, well-ventilated area with a clear exit. Then block the entire area from the dog with a gate, door strap, or cat-only room.

If you want the openness of an uncovered box with better scatter control, a high-sided, low-entry design offers a useful middle ground. The 4FurBaby XXL Stainless Steel Litter Box keeps the top open for airflow and visibility while giving cats more room to turn, dig, and exit comfortably.

For multiple cats, follow the familiar “one box per cat, plus one extra” starting point and spread the boxes across different locations. The Ohio State University Indoor Pet Initiative recommends this arrangement because several boxes side by side can still function like one location when one pet controls access.

Cat using a 4FurBaby high-sided stainless steel litter box

Build a cat-first setup Find a litter box that fits your cat—not just the corner Browse the 4FurBaby collection and choose around your cat's size, mobility, and bathroom habits. Explore the collection

Frequently Asked Questions

Do cats prefer open or covered litter boxes?

Many cats do well with a large open box, and feline-care guidance often recommends uncovered boxes. However, research suggests that most cats may use either style when both boxes are large and clean. Watch your individual cat's posture, hesitation, speed of exit, and elimination habits.

Will a covered litter box stop my dog from eating cat poop?

It may slow down a large dog, but small or determined dogs can still reach inside. A cat-only room, properly sized gate, or door latch usually separates the species more reliably without restricting the cat inside the box.

Should I put the litter box up high?

Only if your cat is a healthy, confident jumper and the platform is stable, wide, and non-slip. Always keep current and future mobility in mind. A floor-level cat-only space is more accessible.

How long does it take a cat to switch to an open box?

Some cats use it immediately; others need days or weeks. Keep the old and new boxes side by side, preserve the familiar litter, and let use of the new box become consistent before removing the old one.

What if my cat suddenly stops using the litter box?

Arrange a veterinary check rather than assuming it is a training problem. Painful urinary, digestive, and mobility conditions can all change litter box behavior. Difficulty passing urine or repeated unproductive trips can be urgent.

Design for the Cat. Manage the Dog.

The litter box is one of your cat's most important daily resources. Make it roomy, clean, easy to enter, and easy to leave. If your dog considers cat poop a delicacy, solve that with barriers, prompt scooping, supervision, and reward-based training—not by turning the cat's bathroom into a cramped bunker.

That is the whole recommendation: give the cat the better bathroom and give the dog fewer opportunities.

Health note: This article provides general pet-care information and is not a substitute for veterinary diagnosis. Contact your veterinarian about sudden litter box avoidance, urinary signs, persistent coprophagia, or other changes in health or behavior.