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Writer's pictureDr. Gaffud

Kidney Disease in Dogs: Causes and Holistic Management


A Bull Terrier dog walking outdoors

Kidney disease in dogs is a serious health condition that affects many canines, leading to a decline in their overall well-being. Understanding the causes, symptoms, and management of kidney disease helps dog owners provide the best care for their pets.


Topics:

  • What is Kidney Disease in Dogs?

  • What are the Main Functions of the Kidneys in Dogs?

  • What Causes Kidney Disease in Dogs?

  • What are the Early Signs of Kidney Disease in Dogs?

  • What are the Types of Canine Kidney Disease?

  • How is Kidney Disease Diagnosed in Dogs?

  • Holistic Management of Kidney Diseases in Dogs


What is Kidney Disease in Dogs?

A lethargic Bull Terrier dog

Kidney disease in dogs, also known as renal disease, occurs when the kidneys lose their ability to function properly. The kidneys play a vital role in filtering waste products from the blood, regulating water balance, and maintaining essential electrolytes. 


When the kidneys are not functioning correctly, waste products build up in the dog's body, leading to various health issues.


What are the Main Functions of the Kidneys in Dogs?

A Shar-pei dog being walked outdoors

The important kidney functions are listed below.

  • Filtering waste from the blood and excreting it via the urine.

  • Regulating blood pressure by managing fluid balance.

  • Balancing electrolytes such as sodium and potassium.

  • Producing hormones that help stimulate red blood cell production and maintain bone health.


“The main functions of the kidneys in dogs are to filter waste and water from the blood, and to maintain homeostasis,” according to the 2013 study of Cobrin, A., Blois, S., Kruth, S., Abrams-Ogg, A., & Dewey, C., titled “Biomarkers in the assessment of acute and chronic kidney diseases in the dog and cat.”

What Causes Kidney Disease in Dogs?

A lethargic Shar-pei dog lying on a dog bed

The causes of kidney disease in dogs are listed below.

  • Age: Older dogs are more likely to develop kidney disease due to natural aging and wear and tear on the kidneys.

  • Genetics: Some breeds are predisposed to kidney disease due to genetic factors.

  • Infections: Bacterial infections, such as leptospirosis, damage the kidneys.

  • Toxins: Ingesting toxins, such as antifreeze or certain medications, cause acute kidney failure.

  • Chronic conditions: Conditions like high blood pressure or diabetes can contribute to kidney damage over time.


What Dog Ages are More Likely to Develop Kidney Disease?


Kidney disease is more common in older dogs, typically those over seven years of age. However, younger dogs also develop kidney disease due to genetic factors, infections, or toxin exposure.


“Aging in dogs' kidneys is associated with increased frequency of glomerulosclerosis, interstitial fibrosis, and tubular atrophy,” according to the 2016 study of Cianciolo, R., Benali, S., & Aresu, L., titled “Aging in the Canine Kidney.”

Are Certain Dog Breeds More Susceptible to Kidney Disease?


Yes, certain breeds are more susceptible to kidney disease due to genetic predispositions. Breeds such as Bull Terriers, Shar-Peis, and Cocker Spaniels are known to have a higher risk of developing kidney issues.


What are the Early Signs of Kidney Disease in Dogs?

A lethargic Cocker Spaniel dog lying outdoors


The subtle signs of early stages of kidney disease in dogs are shown below.

  • Increased urination and thirst (polyuria / polydipsia)

  • Decreased appetite

  • Lethargy

  • Mild weight loss


“Early signs of kidney disease in dogs include urine tests detecting proteinuria and blood tests evaluating plasma creatinine concentration,” according to the 2004 study of Lees, G., titled “ Early diagnosis of renal disease and renal failure.”

What are the Types of Canine Kidney Disease?

A Cocker Spaniel dog sitting outdoors

There are two main types of canine kidney disease.

  • Acute kidney disease: This form develops suddenly, often due to toxins, infections, or decreased blood flow to the kidneys. It is life-threatening but reversible if treated promptly.

  • Chronic kidney disease (CKD): This is a progressive condition that develops over time. It is usually irreversible and leads to gradual loss of kidney function.


What are the Different Stages of Chronic Kidney Disease in Dogs?


Chronic kidney disease in dogs is classified into four stages based on the severity of kidney damage.

  1. Stage 1: Early kidney damage with no obvious clinical signs. Blood tests show elevated kidney levels.

  2. Stage 2: Mild kidney failure with minimal clinical signs. Dogs show increased thirst and urination.

  3. Stage 3: Moderate kidney failure with more noticeable symptoms, including loss of appetite and lethargy.

  4. Stage 4: Severe kidney failure with significant symptoms, including vomiting, diarrhea, and weight loss. This stage often requires intensive management and palliative care.


“Stage 1 CKD was diagnosed in 12.4% of dogs, while stages 2, 3, and 4 were diagnosed in 4.9%, 8.7%, and 13.6% of the dogs,” according to the 2020 study of Scardoel, B., Gomes, S., Martorelli, C., & Agopian, R., titled “Chronic kidney disease in dogs and cats – retrospective study and literature review.” 

What are the Signs of Advanced Kidney Disease in Dogs?


As kidney disease progresses to advanced stages, dogs exhibit more severe symptoms.

  • Significant weight loss

  • Vomiting and diarrhea

  • Bad breath with a chemical odor

  • Mouth ulcers

  • Pale gums and anemia

  • Swelling of the limbs or abdomen

  • Frequently Asked Questions


How is Kidney Disease Diagnosed in Dogs?

Blood collection in an adult dog

Aside from physical examination, kidney disease is typically diagnosed through laboratory and diagnostic imaging methods.

  • Blood tests: To check for elevated levels of kidney-related markers such as creatinine and blood urea nitrogen (BUN).

  • Urine tests: To assess urine concentration and detect the presence of protein, glucose, or bacteria.

  • Imaging: Ultrasound or X-rays are used to evaluate the size and shape of the kidneys and detect any abnormalities.


Holistic Management of Kidney Diseases in Dogs

An adult dog drinking water from a bottle held by a human


Holistic management for dog kidney disease involves addressing the condition with a combination of conventional veterinary care, supportive therapies, and lifestyle changes aimed at improving the dog's overall well-being. 


1. Dietary Management

  • Prescription Renal Diets: Diets formulated to support kidney health are essential. These diets are typically low in protein, phosphorus, and sodium while being rich in omega-3 fatty acids and antioxidants to reduce kidney strain and inflammation.

  • Hydration: Ensuring adequate hydration is critical, as dehydration worsens kidney function. Feeding moist food or providing broth helps increase fluid intake.

  • Supplements: Omega-3 supplements, phosphorus binders, and probiotics are commonly recommended to support kidney health, improve digestion, and reduce inflammation.


2. Medications and Veterinary Care

  • Blood Pressure and Electrolyte Management: Medications are needed to control high blood pressure and electrolyte imbalances often seen in kidney disease such as ACE inhibitors, phosphate binders, and anti-nausea medications.

  • Monitoring: Regular blood tests, urine analysis, and blood pressure checks are vital to assess kidney function and disease progression.


3. Herbal and Natural Therapies

  • Herbal Support: Some holistic approaches include herbs like dandelion, parsley, or milk thistle to support kidney function and detoxification.

  • Acupuncture: In cases of chronic kidney disease (CKD), acupuncture is sometimes used to improve blood circulation to the kidneys and relieve symptoms such as nausea and poor appetite.

  • CBD Oil: CBD oil is used as part of a holistic plan to reduce inflammation and pain.


4. Hydration Therapy

  • Subcutaneous Fluids: Veterinarians administer fluids under the skin to help flush out toxins and maintain hydration. This treatment is done at home under veterinary guidance for CKD management.


5. Exercise and Lifestyle Adjustments

  • Moderate Activity: Gentle exercise helps maintain muscle mass and general health, but should be adjusted based on the dog’s energy levels and stage of kidney disease.

  • Stress Reduction: Minimizing stress through routine, calm environments, and supportive therapies like massage improves a dog’s overall well-being.


6. Proactive Disease Management

  • Early Detection and Intervention: Routine vet check-ups and monitoring of early symptoms, such as increased thirst and urination, lead to earlier intervention and better long-term management.

  • Home Monitoring: Owners track symptoms like appetite, energy levels, and hydration to provide their vet with more information for personalized care.


7. Environmental Toxins and Avoidance

  • Toxin Reduction: Reducing exposure to environmental toxins, such as certain household chemicals, medications, or foods (e.g., grapes, and raisins), helps protect the kidneys from further damage.


“A multi-dimensional approach is necessary for successful treatment and prevention of kidney disease in dogs, including identifying causes, evaluating regularly, and implementing comprehensive treatment programs,” according to the 2010 study of Roudebush, P., Polzin, D., Adams, L., Towell, T., & Forrester, S., titled “An evidence-based review of therapies for canine chronic kidney disease.”

By understanding kidney disease in dogs and implementing holistic management strategies, owners help their pets live healthier, more comfortable lives. Regular veterinary care, a balanced diet, and early intervention are key to managing kidney issues in dogs effectively.


FAQ’s

A Bull Terrier dog wearing an eyeglasses while lying on a couch with a book

What are the Common Treatments for Kidney Disease in Dogs?

Treatment for kidney disease in dogs depends on the severity and underlying cause. Common treatments include dietary management, fluid therapy, and medications.


What Medications are Typically Used to Treat Kidney Disease in Dogs?

Common medications for treating kidney disease in dogs include ACE inhibitors, phosphate binders, and anti-nausea medications.


Is Kidney Disease in Dogs Preventable?

While not all cases of kidney disease are preventable, the steps to take to reduce the risks include regular veterinary check-ups, hydration, and avoiding toxins.


How To Boost a Dog's Immune System to Help Prevent Kidney Disease?

Boosting a dog's immune system helps prevent infections and support overall health. To do so, provide a balanced diet, regular exercise, and supplements.


What Diet is Recommended to Prevent Kidney Disease?

A diet that supports kidney health is low in protein and phosphorus but rich in omega-3 fatty acids.


Can Kidney Disease Cause Pain in Dogs?

Yes, kidney disease causes pain in dogs, especially in advanced stages. Pain results from associated conditions such as kidney infections, bladder stones, or ulcers in the mouth.


How Does Kidney Disease in Dogs Increase the Risk of Urinary Tract Infections (UTIs)?

Kidney disease weakens a dog's immune system, making them more susceptible to infections, including urinary tract infections (UTIs). UTIs are common in dogs with kidney disease due to the reduced ability to concentrate urine and remove waste effectively.

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