A dog with a urinary tract infection (UTI) may sometimes stop pooping or have a noticeable change in bowel movements at the same time.
This can be confusing because a UTI affects the urinary system, while constipation or difficulty passing stool involves the digestive tract.
You may notice that your dog is still trying to urinate but has not had a bowel movement, or that they are straining without it being immediately clear whether the problem is with urination or defecation.
This depends on your dog’s other symptoms, age, medical history, eating and drinking habits, and how long they have gone without passing stool. In some cases, the two problems happen independently.
In others, pain, dehydration, medication, or another underlying condition can contribute to both. Understanding the possible connections can help you recognize when veterinary assessment is appropriate.
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Dog UTI and Not Pooping: Why It Happens
A dog may have a UTI and not be pooping because discomfort, dehydration, reduced food intake, stress, or another illness can affect both urination and bowel movements.
A UTI itself does not usually directly stop the intestines from producing or passing stool.
It is also important to distinguish straining to urinate from straining to poop.
Dogs with urinary discomfort may repeatedly squat, which can sometimes be mistaken for constipation.
If your dog is repeatedly trying to urinate and little or no urine is coming out, the urinary problem is more urgent than simply not having a bowel movement.
Dog UTI and Not Pooping: Common Causes
Constipation occurring alongside a UTI
A dog can have a genuine UTI and constipation at the same time. Constipation may occur because of inadequate water intake, dietary changes, reduced activity, or other digestive factors.
In this situation, the urinary infection and constipation may be separate problems rather than one condition causing both symptoms.
Related: Dog UTI and Not Peeing (Here’s Why)
Dehydration
Dehydration can contribute to harder, more difficult-to-pass stool. A dog that is drinking less because they feel unwell may therefore develop constipation while also experiencing urinary symptoms.
Dehydration can become more significant when a dog has vomiting, diarrhea, fever, or another illness.
Your veterinarian can assess hydration and determine whether additional treatment is needed.
Reduced food intake
If your dog is eating much less than usual, there may simply be less stool being produced.
A dog with urinary discomfort may temporarily have a reduced appetite, although significant appetite loss should not automatically be blamed on a UTI.
If your dog has both a urinary problem and a prolonged refusal to eat, veterinary evaluation is appropriate.
Related: Dog UTI and not eating (Why it happens)
Pain and reluctance to posture
Pain can make a dog reluctant to assume the position needed to poop. Abdominal, back, hip, or pelvic discomfort can all potentially interfere with normal defecation.
A dog with a painful urinary condition may also avoid squatting because the position is uncomfortable.
This can make it appear as though the dog is constipated when the primary problem is urinary or pain-related.
Stress or changes in routine
Changes in environment, schedule, travel, hospitalization, or other stressful experiences can temporarily alter a dog’s bowel habits.
A dog being treated for a UTI may have changes in routine that affect normal defecation.
Stress alone does not explain every case of constipation, however, particularly when the dog is showing significant discomfort or other symptoms.
Medication side effects
Some medications can affect appetite, gastrointestinal function, or stool consistency.
If your dog stopped pooping after starting treatment for a UTI or another condition, tell your veterinarian when the medication was started and when the bowel changes began.
Do not assume that medication is responsible without considering the underlying illness and other possible causes.
Intestinal obstruction
A dog that has stopped passing stool may have an intestinal blockage, particularly if there is also vomiting, abdominal pain, loss of appetite, or repeated attempts to defecate.
An intestinal obstruction is different from ordinary constipation and can become serious.
If your dog is unable to pass stool and is repeatedly vomiting or appears painful or very unwell, veterinary assessment should not be delayed.
Enlarged prostate in male dogs
In male dogs, certain prostate problems can affect both urinary and bowel function.
An enlarged prostate can place pressure around the pelvic region and make urination or defecation more difficult.
This possibility is particularly relevant when a male dog has recurring urinary symptoms together with straining to poop or changes in bowel movements.
Urinary stones or obstruction
Urinary stones can produce symptoms that resemble a UTI and may cause repeated squatting and straining.
A dog that is repeatedly squatting but not producing urine may actually be experiencing a urinary obstruction rather than constipation.
This distinction is extremely important because complete urinary obstruction requires urgent veterinary treatment.
Another underlying illness
A dog can develop urinary and gastrointestinal symptoms as part of a broader illness.
Kidney disease, metabolic disorders, significant infection, pain, or other systemic conditions may affect appetite, hydration, urination, and bowel movements.
When several body systems are affected at once, a veterinarian may recommend blood tests and other diagnostic testing rather than treating the symptoms separately.
Related: Dog not responding to antibiotics for UTI (Here’s Why)
Dog UTI and Not Pooping but Still Eating
If your dog has a UTI, is still eating normally, and has simply gone longer than usual without pooping, the situation may be related to mild constipation or a temporary change in bowel habits.
However, the length of time without a bowel movement matters less than the overall pattern of symptoms.
Repeated straining, abdominal discomfort, vomiting, loss of appetite, or a significant change from your dog’s normal bowel habits warrants veterinary attention.
It is also important to confirm that your dog is actually producing urine normally, because repeated squatting can make urinary and bowel problems difficult to distinguish.
Dog UTI and Not Pooping With Vomiting
Vomiting alongside a UTI and inability to pass stool is more concerning than a simple change in bowel frequency.
Vomiting can occur with significant gastrointestinal disease, an intestinal obstruction, severe illness, or some urinary conditions.
If your dog is repeatedly vomiting, appears painful or weak, has a swollen abdomen, or cannot urinate normally, seek prompt veterinary care.
Dog UTI and Not Pooping but Straining
Straining is one of the most important signs to interpret correctly. A dog may strain because they are trying to urinate, trying to defecate, or experiencing discomfort in the abdomen or pelvic region.
Watch for what actually comes out when your dog squats. Repeated attempts to urinate with little or no urine are more urgent than simply going longer than usual without stool and should be assessed promptly.
Dog UTI and Not Pooping After Antibiotics
If your dog stops having bowel movements after starting antibiotics for a UTI, the medication, reduced appetite, changes in diet, dehydration, or the underlying illness may all be relevant.
Some dogs experience gastrointestinal changes while taking medication, but persistent constipation or other significant digestive symptoms should be discussed with your veterinarian.
The treatment may need to be reassessed if the dog is becoming increasingly uncomfortable or developing additional symptoms.
When to Call or Visit the Vet
Contact your veterinarian if your dog’s bowel movements have changed significantly or if urinary and digestive symptoms are occurring together, particularly when the problem persists or worsens.
Seek immediate veterinary care if your dog:
Repeatedly strains but produces little or no urine
Cannot urinate normally
Repeatedly strains to poop without producing stool
Vomits repeatedly
Has a swollen or painful abdomen
Refuses food or water
Becomes unusually lethargic, weak, or collapses
Has blood in the urine or stool
Develops fever or significant pain
Has a major change in drinking or urination
Has persistent constipation or worsening bowel symptoms
Develops urinary or bowel problems despite treatment
Dog UTI and Not Pooping: Treatment
Treatment depends on whether the dog has a confirmed UTI, constipation, urinary obstruction, intestinal disease, or another underlying problem.
A veterinarian may perform a physical examination, urinalysis, and urine culture when appropriate, while abdominal examination and possibly X-rays or ultrasound can help investigate constipation, stones, obstruction, or other structural problems.
Blood tests may also be recommended when dehydration, kidney disease, infection, or another systemic condition is suspected.
Treatment is directed at the underlying diagnosis and may involve appropriate treatment for a confirmed bacterial UTI, management of constipation, correction of dehydration, or urgent intervention for an intestinal or urinary obstruction.
Key Takeaway
A dog with a UTI that is not pooping does not necessarily mean that the UTI is causing constipation.
A dog can have a UTI and a separate bowel problem, while dehydration, reduced appetite, pain, stress, medication, or another underlying illness may contribute to both.
One of the most important things to determine is whether your dog is actually unable to poop or is struggling to urinate. Repeated attempts to urinate with little or no urine can indicate a urinary obstruction and require prompt veterinary attention.
If your dog has stopped passing stool and is also vomiting, painful, weak, refusing food, or showing difficulty urinating, veterinary evaluation is especially important.
Proper examination and testing can determine whether the problem is a simple UTI with a separate bowel change or something requiring more immediate treatment.