Dogs Blood in Urine: Causes, Signs, and What to Do
Discovering blood in your dog's urine can be concerning, and this guide covers the common causes, associated signs, and the steps you can take while arranging veterinary care.
Quick Answer
Blood in a dog's urine, called hematuria, may stem from urinary tract infections, bladder or kidney stones, inflammation, trauma, prostate problems, or tumors. Because some causes can worsen without treatment, contact a veterinarian when you notice pink, red, or brown urine. A veterinarian can perform a urine analysis, imaging, and other tests to find the cause and recommend the right care.
SYMPTOM TRIAGE: Blood in a dog's urine is not normal and should be evaluated by a professional. Use our guided tool at PawAI Lab Symptom Triage.
Understanding Blood in Dog Urine (Hematuria)
Hematuria refers to the presence of blood in the urine. In dogs, it can be visible (gross hematuria) or detectable only under a microscope (microscopic hematuria). Visible blood may turn urine pink, red, or dark brown, and it may appear throughout urination or only at the end.
The urinary tract includes the kidneys, ureters, bladder, and urethra. Bleeding can originate at any point along this pathway, and the location and pattern of bleeding can help a veterinarian narrow down the cause.
Signs that sometimes accompany blood in a dog's urine include:
- Straining or frequent attempts to urinate
- Passing only small amounts of urine at a time
- Licking the genital area more than usual
- Urinating inside the home or in unusual places
- Whimpering or signs of discomfort
- Changes in appetite or energy
Common Causes of Blood in Dogs' Urine
Several conditions can be linked to hematuria in dogs. Only a veterinarian can confirm the specific cause.
Urinary tract infections are a frequent cause, particularly in female dogs. Bacteria can inflame the bladder lining, leading to bleeding and discomfort.
Bladder stones are hard mineral deposits that form in the bladder. They can scrape and irritate the bladder wall, causing bleeding. Breeds such as Dalmatians, Yorkshire Terriers, and Miniature Schnauzers may be more susceptible to certain stone types.
Kidney stones or kidney disease can produce blood in urine as well. Infections, structural abnormalities, or chronic kidney changes may all contribute.
Bladder inflammation (cystitis) can occur with or without infection. Stress, diet, or other factors may play a role in some cases.
Prostate disorders in intact males, including infection or benign enlargement, may cause bloody urine or a bloody discharge from the penis.
Tumors of the bladder or urinary tract, though less common, can lead to bleeding. Older dogs are more frequently affected.
Trauma, such as a blow to the abdomen, can damage the urinary tract and cause visible blood.
Toxins or poisoning, including ingestion of certain plants or chemicals, may damage the kidneys and result in bleeding.
What to Watch For and What to Do
While you arrange a veterinary visit, observing your dog closely can provide useful details for the veterinarian:
- Note the urine color and whether blood appears throughout or only at the end of the stream
- Track how often your dog tries to urinate and how much they pass each time
- Look for signs of pain, restlessness, or distress
- Monitor water intake and appetite
- Ensure your dog can access fresh water at all times
- Limit exercise and keep your dog calm
If possible, collect a fresh urine sample in a clean, dry container. Your veterinarian may ask you to bring it to the appointment, and a sample collected at home can speed up the diagnostic process.
When to Contact a Veterinarian
Any instance of blood in a dog's urine warrants a veterinary consultation. Prompt evaluation is recommended because some conditions can progress and cause more serious complications if left unaddressed.
Seek emergency veterinary care immediately if your dog shows any of the following:
- Cannot urinate despite straining (a possible urethral blockage)
- Pale, white, or bluish gums
- Collapse, weakness, or unresponsiveness
- A firm, swollen, or painful abdomen
- Repeated vomiting
- Signs of severe pain
These may indicate a blockage, significant bleeding, or another urgent condition that requires immediate treatment.
If your dog is otherwise stable and comfortable, contact your regular veterinarian to schedule an appointment, ideally within one to two days.
Frequently Asked Questions
What does it mean when a dog has blood in its urine?
Blood in a dog's urine means that bleeding is occurring somewhere in the urinary tract. Common causes include infections, bladder stones, inflammation, and less commonly tumors or trauma. A veterinarian can perform tests to identify the source of the bleeding and recommend appropriate treatment.
Is dogs blood in urine an emergency?
It can be. If a dog is unable to urinate, has pale gums, collapses, or shows severe pain, it is a medical emergency. If the dog seems otherwise well, it is still important to see a veterinarian promptly, but it may not require an emergency visit. When in doubt, call a vet right away.
Can diet cause blood in a dog's urine?
Diet itself does not directly cause blood in urine, but certain dietary factors may contribute to the formation of bladder stones, which can then cause bleeding. A veterinarian can advise whether a diet change may help prevent recurrence after the underlying cause has been identified.
How is blood in dog urine diagnosed?
A veterinarian typically starts with a physical exam and a urine analysis. Additional tests may include blood work, X-rays, ultrasound, or a urine culture. These help identify infections, stones, or other underlying conditions so the right treatment plan can be developed.
Sources
- American Animal Hospital Association (AAHA) – Diagnosis and Management of Canine UTIs
- VCA Animal Hospitals – Blood in Dog Urine (Hematuria)
- Cornell University College of Veterinary Medicine – Disorders of the Bladder and Urethra
- Merck Veterinary Manual – Noninfectious Diseases of the Urinary System 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.