Why Is My Cat Peeing Everywhere or Not Peeing at All?
- 11 minutes ago
- 7 min read
By Nicola Roberts, Registered Veterinary Nurse
From litter tray changes to more serious concerns, here’s what to look for, what it might mean, and when to seek advice.
Changes in your cat’s urination can feel worrying, and sometimes a little confusing. Whether it’s peeing outside the litter tray, going more often, or struggling to pass urine, these changes are often your cat’s way of telling you something isn’t quite right.
At Roundwood Vets, this is one of the most common concerns we see in cats. The reassuring news is that many causes are manageable, especially when we catch them early.
If you’re unsure what’s normal, what’s not, and when to seek help, this guide will gently walk you through it.
Contents
What Counts as a Change in Urination?
You know your cat’s routine better than anyone. Even small changes can be meaningful.
Things to watch for include:
Going more or less frequently
Spending longer in the litter tray
Passing smaller amounts of urine
Urinating outside the tray
Changes in smell or appearance
Sometimes these changes are subtle at first, but they’re often the earliest sign that something isn’t quite right.
Common Signs of Urinary Problems in Cats
Some of the most common signs we see include:
Frequent trips to the litter tray
Straining or pushing
Blood in the urine
Vocalising while urinating
Licking around the back end
You may also notice your cat urinating outside the litter tray. While this can be linked to urinary discomfort, it’s not always purely medical.
Cats are very particular about their toileting habits, and even small changes to their setup can affect how comfortable they feel.
For example, some cats may avoid the litter tray if:
The type of litter has changed
The tray isn’t cleaned as often as they would like
The tray is in a busy or noisy area
The litter texture or scent feels unfamiliar
We’re also seeing more cats who are reluctant to use automatic or self-cleaning litter trays. While convenient for us, some cats find them unpredictable or unsettling.
If a tray doesn’t feel safe or comfortable, a cat may simply choose not to use it.
In some cases, particularly in older cats, this behaviour can also be linked to arthritis. If climbing into a tray is uncomfortable, they may go nearby instead.
Could this be constipation… or something else?
One thing that can be confusing is that cats with urinary problems can sometimes look like they are constipated.
When a cat strains in the litter tray, the posture for trying to pass urine and trying to pass faeces can look very similar, so it’s not always obvious what’s happening.
You might notice your cat:
Sitting in the litter tray for longer than usual
Straining or pushing
Going in and out of the tray repeatedly
It’s very natural to assume constipation, especially if you haven’t seen any urine.
However, in some cases, your cat may actually be trying to urinate but is unable to pass urine properly.
If your cat is straining and you’re not sure what they’re trying to do, it’s always safest to check. This is especially important because difficulty passing urine can become serious quite quickly.
Why Cats Develop Urinary Issues
There isn’t always a single cause, and often it’s a combination of factors.
Common reasons include:
Bladder inflammation (cystitis), often linked to stress
Urinary crystals or stones
Urinary tract infections
Diet and hydration factors
Pain, including arthritis
A note on urinary crystals
Urinary crystals are tiny mineral formations that can develop in your cat’s urine. While they may sound harmless, they can irritate the bladder and, in some cases, clump together to form a blockage.
This is particularly serious in male cats, where the urethra is much narrower. A blockage can prevent your cat from passing urine altogether, which is a medical emergency and needs urgent veterinary care.
Diet and hydration play an important role in crystal formation. Some crystals are influenced by the balance of minerals in the urine, as well as how concentrated and how acidic or alkaline the urine is.
This is why, in some cases, we may recommend specific diets designed to support urinary health and reduce the risk of crystals forming.
The reassuring news is that, with early detection and the right management, urinary crystals can often be very effectively controlled.
This is a good example of how what looks like a behavioural change can often have an underlying medical cause.
For example, a cat urinating outside the tray may be:
Experiencing discomfort when passing urine
Associating the tray with pain
Struggling to access the tray comfortably
Reacting to a change in litter or tray setup
Because of this, it’s always best to have your cat checked before assuming it’s behavioural.
Stress and the Bladder: More Connected Than You Might Think
Cats are wonderfully sensitive creatures, and that sensitivity means they can be deeply affected by changes in their environment.
Even small disruptions that seem minor to us can feel significant to them.
In some cats, stress doesn’t just affect behaviour, it can also affect the bladder. This is often linked to a condition called feline idiopathic cystitis (FIC), where inflammation develops without infection.
Common triggers include:
Moving house
A new pet or person in the home
Changes to routine
Subtle household changes like new furniture or different smells
Changes to litter type or litter tray setup
It’s not always obvious what the trigger is, but recognising this connection can be a really important step in helping your cat.
When It Becomes Urgent
One of the most important things to recognise is when a urinary problem becomes an emergency.
If a cat is unable to pass urine, this can become very serious very quickly, particularly in male cats.
Signs that need immediate attention include:
Repeated trips to the litter tray with little or no urine
Straining without producing anything
Restlessness or obvious discomfort
Vomiting or lethargy
If you notice any of these signs, it’s important to seek veterinary care straight away.
How Quickly Should I See a Vet?
If your cat’s urination has changed, it’s always worth acting promptly, but not every situation is an emergency.
That said, a urinary blockage can become life-threatening if not treated quickly. The good news is that with prompt veterinary care, many cats do very well.
Here’s a simple way to think about timing:
Same day (urgent)
Trying to urinate but only passing very small amounts
Frequently going in and out of the litter tray
Straining, crying, or showing discomfort
Seeming quieter than usual or slightly off
These signs can develop into something more serious, so it’s best not to wait.
As soon as possible (within 24 hours)
Urinating more frequently than usual
Passing smaller amounts of urine
Blood in the urine
Urinating outside the litter tray
Any noticeable change from their normal routine
Even if your cat seems otherwise well, these changes are worth checking.
If you’re unsure
It’s always safest to ask.
A quick call to your vet can help you decide what to do next. If it’s outside normal opening hours, their out-of-hours team will still be able to guide you.
We’re always happy to help you make the right decision for your cat.
What To Do If You’re Concerned
If something doesn’t feel right, it’s always worth reaching out.
You don’t need to be certain something is wrong to ask for help.
Contact your vet for advice
Avoid waiting for symptoms to worsen
Seek urgent care if your cat isn’t passing urine
How Urinary Problems Are Treated
Treatment depends on the underlying cause.
This may include:
Pain relief
Anti-inflammatory medication
Dietary changes
Stress management
Intensive treatment in serious cases, sometimes including an anaesthetic, blood tests, intravenous fluids and placing a urinary catheter to safely relieve a blockage
The earlier we see your cat, the simpler treatment is likely to be.
Preventing Issues in the Future
While not every urinary issue can be prevented, there are simple steps that can make a real difference.
Supporting hydration
Feed wet food where possible
Provide fresh water in multiple locations
Try water fountains
Keep water bowls away from food and litter trays
Getting the litter tray setup right
A helpful rule:
One tray per cat, plus one extra
Also consider:
Quiet, low-traffic locations
Keeping trays clean
Easy access, especially for older cats
Whether your cat prefers open or covered trays
Choosing the right litter
Most cats prefer:
Soft, fine-textured litter
Unscented options
Consistency (avoiding sudden changes)
If you do need to change litter, do this gradually over several days.
A note on automatic litter trays
Some cats adapt well, but others may find them:
Noisy or unpredictable
Startling when they activate
Less comfortable
If introducing one:
Keep the old tray available
Let your cat adjust at their own pace
Avoid forcing the change
Reducing stress
Keep routines consistent
Provide quiet resting areas
Ensure enough space in multi-cat households
Offer enrichment like toys and scratching posts
Routine health checks
Routine health checks are an important part of keeping your cat well, even when everything seems normal at home.
As part of this, we often recommend Annual Wellness Testing, which you can think of a little like an MOT for your cat’s health.
This typically includes:
Blood tests to assess organ function and overall health
Urine analysis to check for early signs of urinary issues, inflammation, or crystals
These tests allow us to pick up subtle changes that wouldn’t otherwise be visible, often before your cat shows any signs at home.
Catching things early means we can support your cat sooner, keep them more comfortable, and in many cases prevent problems from becoming more serious.
Final Thoughts
Changes in urination are often one of the earliest signs that your cat may need a little extra support.
Sometimes the cause is straightforward. Sometimes it’s more complex. But most conditions are very manageable, especially when caught early.
If your cat is peeing everywhere, struggling to wee, or you’ve noticed any change at all, do get in touch with us at Roundwood Vets. We’re always here to help, support, and guide you.
And even when everything seems normal, routine health checks can be a reassuring way to keep an eye on your cat’s wellbeing.
If you’d like that extra peace of mind, you’re very welcome to book a wellness appointment with us here in North West London.
We believe that preventing illness is one of the best ways to keep your pet fit, comfortable, and happy throughout their life.
That’s why we’ve created the Vital Pets Club, designed to make essential preventative care simple, accessible, and more affordable.
Vital Pets Club helps to spread the cost of routine care, including vaccinations and parasite protection, into easy monthly payments, so you can keep your pet protected all year round.
It’s a simple way to stay on top of your pet’s health and enjoy peace of mind, knowing their preventative care is taken care of. (T&C's Apply)
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