Pet Health

Kidney Failure in Dogs: Symptoms, Causes & Treatment

Discover the symptoms, causes, and treatment options for kidney failure in dogs. Keep your furry friend healthy and happy with our expert insights and tips!
Author: Veterinary Team
Dial A Vet
Updated
June 6, 2025
|
Published
June 6, 2025
Golden retriever at the vet showing signs of kidney failure with symptoms like lethargy and poor appetite.

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Kidney failure in dogs is a serious and often overwhelming condition for pet owners. If your dog is suddenly drinking more water, urinating excessively, or showing signs of fatigue, it’s natural to worry. Understanding the symptoms, causes, and treatment options can help you take quick, informed action to support your furry friend’s health.

⚠️ What to Watch For

Recognizing the early signs of kidney failure in dogs can make a significant difference in managing the condition. Kidney issues often progress silently, so it’s important to be aware of both subtle and severe symptoms.

  • Increased thirst (polydipsia) and urination (polyuria)
  • Loss of appetite
  • Weight loss or muscle wasting
  • Nausea or vomiting
  • Lethargy or decreased energy levels
  • Bad breath (often described as having a “chemical” smell)
  • Pale gums or signs of anemia
  • Diarrhea
  • Ulcers in the mouth

If your dog is experiencing any of these symptoms, especially in combination, it’s crucial to consult with a veterinarian promptly. Left untreated, kidney failure can lead to severe complications, including toxin buildup in the blood.

🔍 Possible Causes

Kidney failure in dogs can occur for a variety of reasons, ranging from chronic conditions to sudden, acute events. Understanding the cause can help guide treatment and management plans.

  • Chronic Kidney Disease (CKD): This is a gradual decline in kidney function, often seen in older dogs. It may be caused by age-related wear and tear, genetic predispositions, or long-term illnesses.
  • Acute Kidney Injury (AKI): This occurs suddenly and is often the result of toxin exposure, dehydration, infections, or trauma. Common toxins include antifreeze, certain medications, or ingesting harmful plants.
  • Infections: Bacterial infections like leptospirosis can damage kidney tissue if untreated.
  • Underlying conditions: High blood pressure, diabetes, or autoimmune diseases can contribute to kidney dysfunction over time.

According to VCA Animal Hospitals, ingestion of substances like antifreeze or certain human medications can cause acute kidney failure in dogs (source).

✅ What You Can Do at Home

While kidney failure requires veterinary care, there are steps you can take at home to support your dog’s comfort and well-being:

  • Provide fresh, clean water at all times to prevent dehydration.
  • Feed a veterinarian-recommended kidney diet that’s low in protein, phosphorus, and sodium.
  • Limit exposure to potential toxins, such as antifreeze, harmful plants, or human medications.
  • Monitor your dog’s weight and hydration by checking for signs like skin elasticity or dry gums.

Keep in mind that dietary and lifestyle adjustments should always be made under the guidance of a veterinarian. Kidney-friendly diets are specially formulated to reduce strain on your dog’s kidneys while providing essential nutrients.

💡 When to Call a Vet

Kidney failure is a medical emergency that requires prompt veterinary care. Contact a vet immediately if you notice:

  • Severe vomiting or diarrhea
  • Complete loss of appetite
  • Extreme lethargy or inability to move
  • Signs of pain or discomfort, such as whining or restlessness
  • Swelling in the limbs or abdomen

A veterinarian will likely recommend blood and urine tests to assess kidney function, along with imaging like ultrasounds if needed. Early diagnosis and treatment can improve your dog’s quality of life and slow the progression of kidney disease.

If you’re unsure about your dog’s symptoms, consider booking a quick consultation with a licensed vet through Dial A Vet. Early intervention can make all the difference.

FAQs

Q: What is the difference between acute and chronic kidney failure in dogs?
A: Acute kidney failure occurs suddenly and is often caused by toxin exposure or infections, while chronic kidney disease develops gradually over time due to aging or underlying health conditions.

Q: Can kidney failure in dogs be cured?
A: Chronic kidney failure cannot be cured, but it can be managed to improve your dog’s quality of life. Acute kidney failure may be reversible with prompt treatment, depending on the cause.

Q: What diet is best for a dog with kidney disease?
A: A low-protein, low-phosphorus, and low-sodium diet specifically designed for kidney health is recommended. Always consult your vet for specific dietary advice.

Book a $49 online vet consultation at https://www.dialavet.com for fast, expert advice.

References

While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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