Long-Term Kidney Disease in Dogs (Chronic Kidney Disease, CKD)
- Synonyms: Kidney disease, kidney dysfunction, renal failure
- Occurrence: common
- Location of disease: Abdomen/pelvis
When to visit the vet?
Non-urgent see a veterinarian within 2–3 days
If the condition worsens / symptoms persist, consult a veterinarian.
Definition
Chronic kidney disease (CKD) in dogs is a progressive condition in which the kidneys lose their ability to filter waste products from the blood and concentrate urine, leading to a buildup of toxins in the body.
The most important facts at a glance
Chronic kidney disease (CKD) in dogs is a slowly progressive disease that impairs kidney function. The kidneys are crucial for detoxifying the body and regulating fluid balance. CKD often develops unnoticed over months or years and is usually only recognized when a significant portion of kidney function has been lost. The causes are diverse, including genetic factors, infections, toxic substances, and age-related changes. Certain breeds, such as the Cocker Spaniel, are genetically more susceptible. Common symptoms include Vomiting, increased thirst and urination, loss of appetite, and high blood pressure.
Diagnosis is based on clinical symptoms, blood and urine tests, and imaging procedures. Blood tests measure creatinine and urea, which are elevated in kidney failure. Treatment aims to alleviate symptoms and slow progression. Dietary adjustments, such as a special renal diet, are important. Medications for blood pressure control and relief of Nausea are frequently used. Prognosis varies. Early diagnosis and treatment can improve quality of life. Preventive measures include a balanced diet, regular veterinary examinations, and avoiding toxic substances. Research focuses on genetic markers, nutritional strategies, and new medications to develop better treatment options.
Causes
The kidneys are vital organs responsible for detoxifying the body, regulating fluid and electrolyte balance, and producing certain hormones. In dogs, as in other mammals, the kidneys work by filtering the blood, excreting waste products, excess fluids, and electrolytes in the form of urine.
Chronic kidney disease develops slowly over months or years and is often only recognized when a significant portion of kidney function has already been lost. The causes can be diverse and include genetic predispositions, infections, toxic substances, and age-related degenerative changes.
A common cause of CKD in dogs is chronic Inflammatory conditions of the kidneys (nephritis), which can be caused by bacterial infections like leptospirosis or viral infections like canine adenovirus. Autoimmune diseases, where the body attacks its own kidney tissue, can also lead to chronic kidney damage.
Genetic factors also play a role, especially in certain breeds that are more susceptible to kidney diseases, such as the Cocker Spaniel, Doberman, and German Shepherd. Toxic substances, including certain medications and chemicals, can also damage the kidneys and lead to chronic disease.
Symptoms
The symptoms of chronic kidney disease in dogs are often subtle and develop gradually, making early detection difficult. Common signs include increased thirst and urination, as the kidneys lose their ability to concentrate urine, and the body tries to compensate for toxins by excretion.
Further symptoms may include loss of appetite, Weight loss, Vomiting, Diarrhea, and bad breath, caused by the increase in urea and other waste products in the blood. In advanced stages of the disease, dogs may appear lethargic and show signs of weakness or Reluctance to move.
Neurological symptoms such as disorientation, Convulsions, or an unsteady gait can also occur if toxins accumulate in the blood and affect the central nervous system. Pallor of the mucous membranes and high blood pressure are also possible signs of advanced chronic kidney disease.
Therapy
The therapy for chronic kidney disease in dogs aims to alleviate symptoms, slow the progression of the disease, and improve the dog’s quality of life. Individualized therapy is crucial, as treatment depends on the severity of the disease and the specific needs of the dog.
Dietary measures are an essential part of the therapy. A special renal diet, which contains reduced protein, low phosphorus, and increased amounts of omega-3 fatty acids and antioxidants, can help reduce kidney strain and positively influence the course of the disease.
Medications can be used to control symptoms and prevent complications. ACE inhibitors are commonly used medications that lower blood pressure and reduce the burden on the kidneys. Calcium channel blockers and angiotensin II receptor blockers can also be used to control high blood pressure.
Additional treatments may include fluid therapy to support hydration and electrolyte balance, phosphate binders to control phosphorus levels, and medications to relieve Nausea and Vomiting. In advanced cases, dialysis or a kidney transplant may be considered, although these options are less common in veterinary medicine.
Prognosis and follow-up care
The prognosis for dogs with chronic kidney disease varies considerably and depends on early detection, the rate of disease progression, and treatment efficacy. In general, the disease is progressive and can ultimately be fatal, as kidney function is irreversibly damaged.
However, early diagnosis and appropriate treatment can slow the progression of the disease and significantly improve the dog’s quality of life. Many dogs can live relatively symptom-free for several months to years with appropriate medical care and dietary adjustments.
Close collaboration with a veterinarian is crucial to develop an individual treatment plan and conduct regular monitoring to adjust therapy and maximize the dog’s well-being.
Prevention
Although not all cases of chronic kidney disease can be prevented, there are measures that can reduce the risk and support kidney health. A balanced diet and avoiding Overweight are important factors, as Overweight increases the burden on the kidneys.
Regular veterinary examinations are crucial to monitor kidney function and detect early signs of kidney disease. For breeds with a genetic predisposition, regular checking of blood and urine values can help identify problems early.
Avoiding toxic substances, including certain medications, household chemicals, and plants that can cause kidney damage, is also important. Access to clean drinking water and promoting adequate fluid intake further support kidney function.
Learn about the genetic risks of your dog breed and talk to your veterinarian about possible preventive measures, as well as special diets or supplements that can help support kidney health.
Outlook on current research
Chronic kidney disease (CKD) in dogs is a progressive disease that impairs kidney function over a longer period. Currently, research focuses on various aspects of this disease to develop better diagnosis and treatment methods. A significant research area is the identification of genetic markers that could indicate which dogs have a higher risk of developing CKD. By analyzing genetic profiles, researchers hope to better design preventive measures and enable early interventions.
Another important area of research is the investigation of the role of nutrition in the development and progression of CKD. There is evidence that certain diets specifically tailored to dogs with kidney problems can slow the progression of the disease. Scientists are investigating various nutrient compositions and their effects on kidney function to create optimal nutritional plans.
Research is also being conducted on the development of new medications that can support kidney function and slow the progression of the disease. The focus here is on reducing Inflammatory conditions and improving renal perfusion. Some studies also investigate the use of herbal remedies and dietary supplements as complementary therapy approaches.
The role of environmental factors is also being intensively researched. Researchers are investigating how environmental toxins and pollutants that dogs may be exposed to influence the risk of developing CKD. The goal is to develop prevention strategies aimed at minimizing these risks.
Long-term studies are underway to evaluate the effects of lifestyle changes such as increased physical activity and stress reduction on the progression of kidney failure. These studies could lead to comprehensive guidelines that improve the management of CKD in dogs.
Research into CKD in dogs is a dynamic and rapidly growing field that continuously provides new insights. By combining genetic, nutritional, and environmental study approaches, scientists hope to gain a comprehensive understanding of the disease and develop innovative therapies that can improve the lives of affected dogs.
Frequently Asked Questions (FAQs)
1. What is chronic kidney disease in dogs?
2. What symptoms does a dog with chronic kidney disease show?
3. How is chronic kidney disease diagnosed in dogs?
4. Can all dog breeds develop chronic kidney disease?
5. What treatment options are available for dogs with chronic kidney disease?
6. Are there preventive measures against chronic kidney disease in dogs?
7. How does diet affect kidney function in dogs?
8. Can my dog with chronic kidney disease live a normal life?
9. How often should I have my dog examined for chronic kidney disease?
10. What can I do to help my dog with chronic kidney disease?
Literature
- International Renal Interest Society. (2025). IRIS guidelines: Staging of chronic kidney disease and treatment recommendations. IRIS. https://www.iris-kidney.com/iris-guidelines-1
- Chortara, I., Koutinas, C. K., Leontides, L. S., et al. (2025). Real-world data on canine chronic kidney disease in Greece. Frontiers in Veterinary Science, 12, Article 1622073. https://doi.org/10.3389/fvets.2025.1622073
- Perini-Perera, S., Del-Ángel-Caraza, J., Pérez-Sánchez, A. P., Quijano-Hernández, I. A., & Recillas-Morales, S. (2021). Evaluation of chronic kidney disease progression in dogs with therapeutic management of risk factors. Frontiers in Veterinary Science, 8, Article 621084. https://doi.org/10.3389/fvets.2021.621084
- Jacob, F., Polzin, D. J., Osborne, C. A., Allen, T. A., Kirk, C. A., Neaton, J. D., Lekcharoensuk, C., & Swanson, L. L. (2002). Clinical evaluation of dietary modification for treatment of spontaneous chronic renal failure in dogs. Journal of the American Veterinary Medical Association, 220(8), 1163–1170. https://doi.org/10.2460/javma.2002.220.1163
- Jacob, F., Polzin, D. J., Osborne, C. A., Neaton, J. D., Kirk, C. A., Allen, T. A., & Swanson, L. L. (2005). Evaluation of the association between initial proteinuria and morbidity rate or death in dogs with naturally occurring chronic renal failure. Journal of the American Veterinary Medical Association, 226(3), 393–400. https://doi.org/10.2460/javma.2005.226.393
- Lees, G. E., Brown, S. A., Elliott, J., Grauer, G. F., & Vaden, S. L. (2005). Assessment and management of proteinuria in dogs and cats: 2004 ACVIM Forum Consensus Statement. Journal of Veterinary Internal Medicine, 19(3), 377–385. https://doi.org/10.1111/j.1939-1676.2005.tb02713.x
- Lecavalier, J., Elliott, J., & Syme, H. M. (2021). Treatment of proteinuria in dogs with telmisartan: A retrospective study. Journal of Veterinary Internal Medicine, 35(4), 1811–1819. https://doi.org/10.1111/jvim.16155
- Roudebush, P., Polzin, D. J., Adams, L. G., Towell, T. L., & Forrester, S. D. (2010). An evidence-based review of therapies for canine chronic kidney disease. Journal of Small Animal Practice, 51(5), 244–252. https://doi.org/10.1111/j.1748-5827.2010.00907.x
- International Renal Interest Society. (2025). IRIS guidelines: Staging of chronic kidney disease and treatment recommendations. IRIS. https://www.iris-kidney.com/iris-guidelines-1
- Chortara, I., Koutinas, C. K., Leontides, L. S., et al. (2025). Real-world data on canine chronic kidney disease in Greece. Frontiers in Veterinary Science, 12, Article 1622073. https://doi.org/10.3389/fvets.2025.1622073
- Perini-Perera, S., Del-Ángel-Caraza, J., Pérez-Sánchez, A. P., Quijano-Hernández, I. A., & Recillas-Morales, S. (2021). Evaluation of chronic kidney disease progression in dogs with therapeutic management of risk factors. Frontiers in Veterinary Science, 8, Article 621084. https://doi.org/10.3389/fvets.2021.621084
- Jacob, F., Polzin, D. J., Osborne, C. A., Allen, T. A., Kirk, C. A., Neaton, J. D., Lekcharoensuk, C., & Swanson, L. L. (2002). Clinical evaluation of dietary modification for treatment of spontaneous chronic renal failure in dogs. Journal of the American Veterinary Medical Association, 220(8), 1163–1170. https://doi.org/10.2460/javma.2002.220.1163
- Jacob, F., Polzin, D. J., Osborne, C. A., Neaton, J. D., Kirk, C. A., Allen, T. A., & Swanson, L. L. (2005). Evaluation of the association between initial proteinuria and morbidity rate or death in dogs with naturally occurring chronic renal failure. Journal of the American Veterinary Medical Association, 226(3), 393–400. https://doi.org/10.2460/javma.2005.226.393
- Lees, G. E., Brown, S. A., Elliott, J., Grauer, G. F., & Vaden, S. L. (2005). Assessment and management of proteinuria in dogs and cats: 2004 ACVIM Forum Consensus Statement. Journal of Veterinary Internal Medicine, 19(3), 377–385. https://doi.org/10.1111/j.1939-1676.2005.tb02713.x
- Lecavalier, J., Elliott, J., & Syme, H. M. (2021). Treatment of proteinuria in dogs with telmisartan: A retrospective study. Journal of Veterinary Internal Medicine, 35(4), 1811–1819. https://doi.org/10.1111/jvim.16155
- Roudebush, P., Polzin, D. J., Adams, L. G., Towell, T. L., & Forrester, S. D. (2010). An evidence-based review of therapies for canine chronic kidney disease. Journal of Small Animal Practice, 51(5), 244–252. https://doi.org/10.1111/j.1748-5827.2010.00907.x