Why Is My Dog Blood in Urine? Causes and Next Steps
Finding blood in your dog's urine can be alarming, and understanding the possible reasons helps you take the right next steps for your dog's care.
Quick Answer
Blood in a dog's urine, known as hematuria, can result from urinary tract infections, bladder stones, kidney disease, trauma, or in some cases tumors. Because some causes can progress quickly, it is best to contact a veterinarian promptly when you notice pink, red, or brown discoloration in your dog's urine. A veterinarian can run tests to identify the underlying cause and recommend appropriate care.
SYMPTOM TRIAGE: If your dog's urine looks pink, red, or brownish, the cause needs professional evaluation. Use our guided tool at PawAI Lab Symptom Triage.
What Blood in Dog Urine Looks Like
Hematuria is the medical term for blood in the urine. In dogs, the urine may appear pink, red, or dark brown. Sometimes the blood is visible only at the end of urination, while in other cases the entire stream is discolored. You might also notice small blood clots.
Blood can also be microscopic, meaning it is not visible to the naked eye but can be detected through a urine test at a veterinary clinic. If your dog is urinating more frequently or in unusual places, a urine sample can help a veterinarian check for hidden blood even when the urine looks normal.
Signs that sometimes accompany blood in urine include:
- Frequent attempts to urinate with little output
- Straining or vocalizing during urination
- Excessive licking of the genital area
- Accidents in a previously house-trained dog
- Reduced appetite or low energy
Why Your Dog May Have Blood in Urine
Several conditions can be associated with blood in a dog's urine. Only a veterinarian can confirm the specific cause through examination and diagnostic testing.
Urinary tract infections (UTIs) are among the more common causes. Bacteria entering the bladder or urethra can cause inflammation and bleeding. Female dogs and older dogs may be more prone to UTIs.
Bladder stones (uroliths) are mineral formations that can irritate the bladder lining. Certain breeds, including Dalmatians, Miniature Schnauzers, and Shih Tzus, may have a higher predisposition to some types of stones.
Kidney disease or kidney stones can also lead to blood in the urine. Infections, toxins, or chronic changes in kidney function may contribute to bleeding higher in the urinary tract.
Bladder tumors, while less common, can cause bleeding. Transitional cell carcinoma is one type that may occur in dogs, particularly in older females of certain breeds.
Trauma or injury to the abdomen or urinary tract, such as from a fall or accident, can result in visible blood in urine.
Prostate issues in intact male dogs, including prostatitis or benign enlargement, may be associated with bloody urine.
Heat cycles in intact female dogs can produce blood-tinged urine that may be mistaken for hematuria, so the timing of the cycle is relevant when assessing the cause.
What to Monitor at Home
While arranging veterinary care, you can gather useful information to share with your veterinarian:
- Note the color of the urine and whether blood appears at the start, middle, or end of urination
- Record how often your dog urinates and whether straining is present
- Watch for changes in thirst, appetite, or energy level
- Check whether your dog is passing any urine at all, as a full blockage is an emergency
- Keep your dog calm and prevent strenuous activity
- Ensure fresh water is always available
Collecting a fresh urine sample in a clean container may be helpful if your veterinarian asks for one. The sample is most useful if collected within a few hours of the appointment.
When to Contact a Veterinarian
Blood in a dog's urine is generally a reason to see a veterinarian promptly. Even if your dog seems otherwise normal, the underlying cause needs professional assessment to prevent complications.
Seek emergency care immediately if your dog:
- Is unable to pass urine despite repeated attempts (possible blockage)
- Has pale or white gums
- Collapses or is unresponsive
- Shows severe pain or distress
- Has a swollen or firm abdomen
- Is vomiting repeatedly
These signs may indicate a blocked urethra, significant internal bleeding, or another serious condition that requires immediate treatment.
For blood in urine without emergency signs, contact your veterinarian to schedule an appointment, ideally within a day or two.
Frequently Asked Questions
Can blood in dog urine go away on its own?
Blood in urine may occasionally clear if the cause is minor, but it should not be assumed to resolve without evaluation. Some underlying conditions, such as infections or stones, can worsen without treatment. A veterinarian can identify the cause and advise whether monitoring or treatment is appropriate.
Is blood in my dog's urine always a sign of something serious?
Not every case of hematuria indicates a life-threatening problem, but it is not normal and warrants attention. Causes range from treatable infections to more complex conditions. A veterinary exam, urine analysis, and sometimes imaging can help determine the severity and guide next steps.
Can I give my dog anything at home for blood in urine?
No home remedies or medications should be given without veterinary guidance. Human medications, including common pain relievers, can be harmful to dogs. Providing fresh water and keeping your dog comfortable while you arrange veterinary care is the safest approach.
How does a veterinarian find the cause of blood in urine?
A veterinarian typically begins with a physical examination and a urine analysis. Additional tests may include blood work, X-rays, ultrasound, or a urine culture. These steps help pinpoint whether the bleeding stems from infection, stones, or another condition.
Sources
- American Animal Hospital Association (AAHA) – Canine Urinary Tract Infections
- Cornell University College of Veterinary Medicine – Urinary Disorders in Dogs
- VCA Animal Hospitals – Hematuria (Blood in Urine) in Dogs
- Merck Veterinary Manual – Urinary System Disorders in Dogs
Disclaimer
This article is provided for general informational purposes only and does not constitute veterinary advice, diagnosis, or treatment. It is not a substitute for professional veterinary care. Always consult a licensed veterinarian regarding your dog's specific condition, especially if symptoms are severe, progressing, or persistent.