Cat and Dog Blood in Urine or Stool

Possible Causes and What to Do

You clean the litter box and notice a pinkish trace in the urine or a dark spot on the stool—your heart sinks. Cat or dog urinary or intestinal bleeding always requires a veterinarian’s attention. However, not every case indicates something life-threatening. The main thing is not to panic and to act calmly.

Urinary Bleeding: What It Might Mean

In cats, hematuria is most frequently associated with urinary tract issues. Inflammation of the bladder and the formation of crystals in the urinary tract occur on an individual basis in every pet. Cat urinary bleeding is often accompanied by frequent trips to the litter box, restlessness, or, conversely, sitting over the litter box for long periods without result.

In dogs, the causes are similar, but the range is broader: cystitis, urolithiasis, and in older animals, changes in the prostate gland or kidneys. Dog urinary bleeding is sometimes visible to the naked eye—the urine becomes pink or reddish—but it can also be occult, detectable only through laboratory analysis.

When to Act Quickly

• Blood appears abundantly or recurs several days in a row;
• The pet is lethargic and refuses food or water;
• There is vomiting or signs of pain—stiffness, a hunched posture, vocalization;
• A male cat or male dog is clearly unable to urinate—this is a critical emergency.

If any of these signs are present, it is best to contact the clinic on the same day after making an appointment. A urinalysis can speed up diagnostics—you can collect a sample at home and bring it to the clinic during working hours.

Diagnostics at Haabersti Loomakliinik

At Haabersti Loomakliinik in Tallinn, the examination begins with a physical check-up and a detailed conversation with the owner: how long the symptom has been present, whether the pet’s behavior has changed, and what they have eaten. Next, a urinalysis is typically conducted, and the owner should bring a stool sample—this is a foundational step that provides a wealth of information right away. An essential diagnostic step is an abdominal ultrasound: it allows for the evaluation of the bladder, kidneys, and intestines without causing stress to the animal. Based on the results, the doctor explains the situation in plain language and proposes a treatment plan.

What Owners Need to Know

At home, you can and should observe: how often the pet uses the toilet, whether there are changes in volume or consistency, and how they behave. Take a photo of the stool or urine—this genuinely helps the vet during the appointment. You can also collect samples to submit for analysis.

What you should not do: give painkillers or antibiotics without a prescription, wait several days hoping “it will pass on its own,” or abruptly change the diet in hopes of fixing the issue.

Booking an Appointment

Blood in urine or stool is a signal the body sends for a reason. The earlier you determine the cause, the easier and faster it is to help your pet. The team at Haabersti Loomakliinik is ready to see you at a convenient time—book an appointment, and we will get to the bottom of it together.rmine the cause, the easier and faster it is to help your pet. The team at Haabersti Loomakliinik is ready to see you at a convenient time—book an appointment, and we will get to the bottom of it together.

See also Visual diagnostics, Feline Kidney Diseases, Cystocentesis, Cat and Dog Vomiting