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Blood in Dog Urine: What's Causing It

Mar 10,2025 | puaintapets

Blood in a dog's urine, also known as hematuria, can be a concerning sign for any pet owner. There are numerous factors that can cause this condition, and understanding them is crucial for the well - being of our furry companions.

Blood in a Dog’s Urine

What Causes Blood in a Dog’s Urine?

1. Urinary Tract Infection (UTIs)

Bacterial infections in the urinary tract are a common cause of hematuria. UTIs can cause pain, frequent urination, and discomfort.

2. Bladder or Kidney Stones

Mineral deposits in the urinary tract can cause irritation, leading to bleeding and difficulty urinating.

3. Trauma or Injury

A fall, accident, or rough play can injure the urinary tract, leading to blood in the urine.

4. Prostate Disease in Male Dogs

Enlarged or infected prostate glands can lead to urinary problems, including hematuria.

5. Cancer and Tumors (Bladder or Kidney)

Blood in the urine can sometimes indicate a tumor in the bladder, kidneys, or urinary tract.

Related: Unveiling the Causes of Dog Bladder Infections

6. Blood Clotting Disorders

Some dogs have conditions that affect blood clotting, which can cause spontaneous bleeding.

7. Kidney Disease and Renal Failure

Chronic kidney disease can lead to hematuria, especially in older dogs.

8. Poisoning or Toxins (Rodenticides, Medications)

Certain toxins, including rat poison, can cause internal bleeding and blood in the urine.

9. Side Effects of Certain Medications

Some medications, like blood thinners, can lead to hematuria as a side effect.

10. Hormonal Imbalances (Cushing’s Disease)

Cushing’s disease affects hormone levels and can contribute to urinary tract bleeding.

11. Strenuous Exercise-Induced Hematuria

Intense physical activity can lead to temporary blood in the urine.

Blood in a Dog’s Urine

Symptoms of blood in urine in dogs

I. Urinary system related symptoms

Frequent urination: Dogs may urinate more frequently than usual, which may be due to urinary tract infections, stones or other problems.

Difficulty urinating: Dogs may exhibit difficulty or pain in urination, which may be due to stones, infections or other urinary problems.

Changes in urine colour and odour: The urine may appear pink, red or brown and may have a strong odour.

II. Systemic symptoms

Lethargy and weakness: The dog may show more lethargy and weakness than usual, which can be caused by blood loss or other health problems.

Vomiting and loss of appetite: The dog may show signs of vomiting and loss of appetite, which may be caused by discomfort or other health problems.

Abdominal discomfort: Dogs may exhibit abdominal discomfort or pain, which may be caused by urinary problems or other health issues.

III. Other Related Symptoms

Genital licking: Dogs may lick their genitals frequently, which may be due to urinary tract infections or other problems that cause discomfort.

Behavioural changes: The dog may show behavioural changes such as anxiety, restlessness or hiding, which may be due to physical discomfort.

If you notice blood in the urine or any of these accompanying symptoms in your dog, you should contact your veterinarian immediately for diagnosis and treatment.

Blood in a Dog’s Urine

How to Diagnose the Cause of Blood in a Dog’s Urine

A veterinarian may perform:

  • Urinalysis to check for infection or crystals
  • Blood tests to assess kidney function
  • Ultrasound or X-rays to detect stones or tumors

How to Treat Blood in Urine in Dogs?

Effective treatment options for blood in urine in dogs depend on the underlying cause. Here are some common treatment options:

1. Medication

Antibiotics: If the blood in the urine is caused by a urinary tract infection, the veterinarian will usually prescribe specific antibiotics, such as amoxicillin and cephalosporin, based on the results of urine culture and drug sensitivity tests to eliminate the infection.

Anti-inflammatory drugs: For blood in the urine due to inflammation, such as cystitis and prostatitis, your vet may prescribe non-steroidal anti-inflammatory drugs to reduce inflammation and pain.

Haemostatic medication: In some cases, such as blood in the urine due to trauma or clotting disorders, haemostatic medication may be required.

Other drugs: If blood in urine is caused by other diseases, such as diabetes mellitus, Cushing's disease, etc., you may need to take appropriate drugs for a long time to control the condition.

2. Dietary adjustments

Increase water intake: Make sure your dog has access to clean, fresh water at all times and encourage him to drink more to help flush the urinary tract and reduce the chances of bacterial growth and stone formation.

Adjust food types: Avoid feeding your dog foods that are too oily, spicy, heavy or fire-inducing, such as human meals and fried foods. You can choose some light, easy-to-digest food, such as chicken, fish, rice, noodles, etc., cooked into porridge or paste, which is easy for your dog to digest and absorb.

Choose specialised liver supplements: dogs with poor liver may have blood in the urine. It can be used for pets to protect liver and bile, help liver detoxification and metabolism, promote bile excretion, and have a certain effect on the recovery of liver function, which is suitable for cats with jaundice and dogs with cholestasis in elderly dogs. It should be noted that the use of these supplements should be under the guidance of the veterinarian, and the appropriate supplement and dosage should be selected according to the specific conditions of the dog.

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Choose special urinary prescription food: If your dog's blood in the urine is caused by urinary system diseases, such as stones and infections, you can choose special urinary prescription food under the guidance of your veterinarian. These prescription foods usually have specific nutrients and pH levels that help regulate urine composition, prevent stone formation and relieve urinary inflammation.

3. Surgery

Bladder stone removal: If your dog's blood in the urine is caused by a bladder stone that is large or cannot be dissolved by medication, surgery to remove the stone may be necessary.

Tumour removal: If the blood in the urine is caused by a tumour in the urinary tract, surgery may be required to remove the tumour. For some malignant tumours, a combination of chemotherapy and radiotherapy may also be needed.

Other surgeries: If the urethra is damaged or the bladder is ruptured due to trauma, appropriate surgical repair may be required.

4. Other treatments

Blood transfusion therapy: If the dog is severely anaemic due to blood in the urine, blood transfusion therapy may be required.

Supportive therapy: For dogs that are weak due to the disease, supportive therapy such as nutritional supplementation and regulation of electrolyte balance may be required.

Regular review: During the course of treatment, you need to take your dog for regular review as recommended by your veterinarian in order to make timely adjustments to the treatment plan.

Treatment for Blood in a Dog’s Urine

How to Prevent Blood in a Dog’s Urine

To prevent blood in a dog's urine, the following measures can be taken:

Diet and Nutrition

  • High-Quality Diet: Feed your dog a balanced, high-quality diet appropriate for its age, breed, and activity level. This helps maintain a healthy urinary tract and overall well-being.
  • Proper Hydration: Ensure your dog has access to clean, fresh water at all times to keep the urinary system flushed and prevent the formation of crystals or stones.
  • Dietary Supplements: Consider supplements like cranberry extract or glucosamine, which may support urinary tract health. Consult your vet for the appropriate supplement and dosage.

Hygiene and Grooming

  • Genital Hygiene: Keep your dog's genital area clean, especially for female dogs with long fur around the genitals. Trim the fur short to prevent bacteria from growing.
  • Regular Bathing: Bathe your dog regularly to keep its skin and coat clean, but avoid over-bathing as it can strip the skin of natural oils.

Health Monitoring and Veterinary Care

  • Regular Check-ups: Take your dog for annual or biannual veterinary check-ups for routine bloodwork and urinalysis to detect early signs of urinary tract problems.
  • Prompt Treatment: If your dog shows any signs of urinary tract issues, such as frequent urination or discomfort, seek veterinary care immediately. Early treatment can prevent more serious problems.

Lifestyle Management

  • Exercise: Provide regular exercise to keep your dog fit and maintain a healthy weight, which can reduce the risk of urinary problems.
  • Stress Reduction: Minimize stress in your dog's environment as stress can affect the urinary tract. Provide a calm and stable living environment.

Preventive Measures

  • Prevent Toxin Exposure: Keep your dog away from toxic substances like rat poison and certain plants that can cause kidney damage.
  • Neutering/Spaying: Consider neutering or spaying your dog to reduce the risk of certain urinary tract problems, such as prostate issues in males and uterine or vaginal issues in females.

Blood in a Dog’s Urine

FAQs

Is blood in a dog's urine always a serious problem?

While it can be a sign of a serious underlying condition, in some cases, it may be due to a minor issue such as a mild UTI that can be easily treated. However, it is always important to have it evaluated by a veterinarian to rule out more serious causes.

What should I do if I notice blood in my dog's urine?

Contact your veterinarian immediately. They will likely perform a physical examination, a urinalysis, and may recommend further diagnostic tests such as blood tests, X - rays, or an ultrasound to determine the cause.

Can diet changes alone fix blood in my dog's urine?

In some cases where dietary factors are the cause, diet changes may help. However, if the blood in the urine is due to an underlying medical condition such as a tumor or kidney disease, diet changes alone will not be sufficient, and proper medical treatment will be required.

What natural remedy can I give my dog for peeing blood?

  • Cranberries can help prevent bacteria from attaching to the bladder wall and reduce the risk of infection. You can feed your dog cranberry juice or cranberry extract.
  • Apple cider vinegar can help balance the pH of your dog's urine and reduce bacterial growth. Simply add a small amount of apple cider vinegar to your dog's drinking water.
  • Calendula has anti-inflammatory and antibacterial properties and can be used to treat urinary tract infections. You can make a tea from calendula flowers and then let your dog drink it.

Conclusion 

Blood in a dog's urine, known as hematuria, can be caused by multiple factors. Firstly, urinary tract infections are common, with bacteria or fungi irritating the urinary organs. Secondly, the presence of stones in the bladder, kidneys or urethra can damage the tissues during movement. Tumors in the urinary system are also a cause, although less frequent. Additionally, trauma to the abdomen or urinary area can lead to bleeding. Certain medications or toxins may affect the urinary tract and result in blood in the urine. Finally, systemic diseases like blood disorders or liver problems (affecting clotting) can be underlying causes. Identifying the cause requires veterinary examination and proper diagnostic tests.

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