Symptoms and Causes of Chronic Kidney Disease in Dogs

Written by: Karuna Subbiah

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Time to read 8 min

Chronic Kidney Disease (CKD) is a major health problem for dogs, so it's important for us to be aware of it and find it early. As pet parents, it's crucial for us to understand CKD so we can take good care of our furry friends.


Chronic kidney disease (CKD) in dogs is when their kidneys slowly lose their ability to filter waste and perform important body functions. The early stages of CKD often manifest with subtle symptoms, making detection a nuanced task.


This blog aims to shed light on the intricacies of chronic kidney disease in dogs, from its causes and symptoms to viable treatment options.


Our goal is to assist dog parents in understanding and detecting chronic kidney disease (CKD) at an early stage, enabling them to take necessary measures. Identifying CKD early on can significantly enhance a dog's overall well-being.


We invite you to join us on this mission, as we provide dog parents with the knowledge required to comprehend and effectively manage CKD in their pets.

Chronic Kidney Disease (CKD) Symptoms in Dogs

Chronic Kidney Disease (CKD) Symptoms in Dogs

Understanding the symptoms of Chronic Kidney Disease (CKD) in dogs is crucial for early detection and effective management. CKD is a progressive condition, and its symptoms may vary in intensity as the disease advances. Here's a detailed breakdown of the symptoms in different stages:

Early-stage symptoms of Chronic Kidney Disease (CKD) in dogs:

Increased Thirst (Polydipsia):

  • Dogs in the early stages of CKD often develop an insatiable thirst. This heightened desire for water stems from the kidneys' reduced ability to concentrate urine properly.

  • Since the kidney struggles to filter waste efficiently, the body consumes more water to help the kidneys filter waste.

  • If you have a pet dog, you might notice that they are always looking for water and drinking more than usual. This is a key indicator that warrants attention.

Excessive Urination (Polyuria):

  • Along with increased thirst, dogs with early-stage CKD may experience frequent urination patterns. Polyuria refers to an increase in the frequency and volume of urination.

  • Pet parents might observe their dogs needing to go outside more frequently or, in some cases, experiencing accidents indoors.

  • Additionally, dogs may show signs of straining during urination, indicating discomfort or difficulty in the process.

Weight Loss:

  • As CKD progresses, the kidneys lose their ability to effectively filter waste from the bloodstream. This inability can lead to a gradual and mild weight loss in affected dogs.

  • The weight loss may be noticeable, but it can be subtle initially.

  • As a pet owner, it is important to pay close attention to any changes in your dog's body condition. This is especially true if your dog is losing weight and it is not because of changes in their diet or activity levels.

These early-stage symptoms collectively serve as important indicators of potential kidney dysfunction. Detecting these signs promptly allows for early intervention, which is crucial in managing CKD effectively.


If a dog shows any of these symptoms, it's important that you  consult with a veterinarian  for a thorough examination and diagnostic test. Early diagnosis and a tailored treatment plan can significantly improve the quality of life for dogs affected by CKD.

Moderate-stage symptoms of Chronic Kidney Disease (CKD) in dogs:

Moderate-stage symptoms of CKD in Dogs

Lethargy and Fatigue:

  • Dogs in the moderate stage of CKD often exhibit a noticeable decrease in energy levels and an overall sense of lethargy.

  • Previously active and playful dogs may become more reluctant to engage in physical activities or may tire easily.

  • This lethargy is a result of the body's compromised ability to effectively filter waste products, leading to an accumulation of toxins that can sap the dog's energy.

Reduced Appetite:

  • CKD can have a profound impact on a dog's appetite. Nausea, a common symptom in this stage, can lead to a decline in interest in food.

  • Dogs may show reluctance to eat, become pickier with their food, or even refuse meals altogether.

  • Pet parents may notice changes in eating habits and should be attentive to any unexplained decrease in their dog's food consumption.

Vomiting:

  • Occasional vomiting is another symptom that becomes more prominent in the moderate stage of CKD.

  • The collection of toxins in the bloodstream can lead to gastrointestinal disturbances, resulting in bouts of vomiting.

  • Vomiting may not be constant but can occur occasionally. Monitoring the frequency and nature of vomiting episodes is crucial for assessing the progression of the disease and guiding appropriate veterinary interventions.

These symptoms at a moderate stage show that the dog's CKD is getting worse and starting to affect different parts of its health. Recognizing these signs promptly and seeking veterinary care is essential for implementing a comprehensive treatment plan. 


Veterinarians may recommend dietary changes such as a dog renal diet, medications, and other supportive measures to alleviate these symptoms and improve the dog's overall well-being. 


Regular veterinary check-ups become increasingly important in managing CKD as it progresses to moderate stages. 

Severe-stage symptoms of Chronic Kidney Disease (CKD) in dogs:

Severe-stage symptoms of CKD in dogs

Significant Weight Loss and Muscle Wasting:

  • Dogs in the advanced stages of CKD may undergo significant and visible weight loss.

  • When the kidneys cannot properly filter waste, it causes the muscles to break down, which leads to muscle wasting.

  • This can make affected dogs look weak and skinny, showing how the disease affects their overall body condition.

Weakness and Dehydration:

  • Affected dogs with severe CKD exhibit pronounced weakness and lethargy. When the body becomes unable to regulate fluid balance it leads to dehydration.

  • Dehydration exacerbates the dog's weakness and contributes to an overall decline in their energy levels.

  • In your pet dog, you might notice that they become more tired and less responsive when they are sick. This can show how serious their illness is.

Foul Breath (Uremic Breath):

  • When there are too many toxins, like urea, in a dog's bloodstream, it can cause their breath to have a distinctive and unpleasant odor.

  • This foul breath, often described as "uremic" or ammonia-like, is a characteristic feature of advanced CKD.

  • This shows that the dog's kidneys are not working well enough to filter and get rid of waste products, which causes these toxins to be in the dog's breath.

Neurological Signs:

  • In the advanced stages of CKD, the impact of accumulated toxins on the nervous system becomes apparent.

  • Dogs may exhibit neurological signs such as disorientation, seizures, or notable behavioral changes.

  • These signs indicate the severe consequences of CKD on the central nervous system and necessitate immediate veterinary attention.

These severe-stage symptoms collectively highlight the critical and advanced nature of CKD. Noticing these signs quickly becomes important so that a veterinarian can help your dogs right away. Dogs in this stage need a lot of care and treatment plans customized for them.


Veterinary professionals may recommend a specialized diet and medicines for supportive measures to address dehydration, nutritional support, and medications to manage neurological symptoms.

Regular communication with a veterinarian becomes especially crucial for pet parents navigating the challenges of severe CKD in their beloved dogs.

Causes of Chronic Kidney Disease (CKD) in Dogs

Causes of Chronic Kidney Disease (CKD) in Dogs
  • Aging: Aging is a primary contributor to CKD in dogs. As dogs grow older, the natural wear and tear on the kidneys can lead to a gradual decline in kidney function.

  • Kidney Infections: Chronic or recurrent kidney infections can damage the kidney tissue over time, contributing to the development of CKD.

  • Genetic Predispositions: Some dogs may be genetically predisposed to kidney issues, making them more susceptible to CKD. Certain breeds may have a higher risk.

  • Prolonged Exposure to Toxins: Dogs exposed to toxins over an extended period, whether through environmental factors or ingesting harmful substances, may experience kidney damage. Common toxins include antifreeze, certain plants, and certain medications.

  • Medications: Prolonged use of certain medications, especially those that may be nephrotoxic (harmful to the kidneys), can contribute to the development of CKD. Regular veterinary monitoring is crucial for dogs on long-term medications.

  • Inadequate Hydration: Insufficient water intake can strain the kidneys, as they rely on proper hydration to function optimally. Dogs not receiving an adequate amount of water may be at a higher risk of developing CKD.

  • Specific Breeds: Certain dog breeds may have a genetic predisposition to kidney issues. Some dog breeds, including the Bull Terrier, Cocker Spaniel, and German Shepherd, have a higher incidence of Canine Kidney Disease.

  • Systemic Diseases: Underlying systemic diseases, such as blood pressure (hypertension) or autoimmune conditions, can impact the kidneys and contribute to the development of CKD.

  • Urinary Tract Obstructions: Conditions leading to urinary tract obstructions, such as kidney stones or tumors, can hinder normal kidney function and increase the risk of CKD.

Understanding these diverse factors is essential for both veterinarians and pet parents. To prevent or handle conditions that may lead to CKD in dogs, it is important to identify the possible causes.

 

Regular visits to the vet and prioritizing preventive care are essential for keeping our furry friends' kidneys healthy.

Closing Thoughts

Dogs with kidney disease

As we explore the landscape of Chronic Kidney Disease (CKD) in dogs, it's essential for us, responsible pet parents, to grasp the key aspects. Your doggo, who's the heartbeat of your home, silently faces a health challenge. CKD creeps in with subtle signs, making detection a bit confusing.


In the early stages, you may notice your dog becoming increasingly thirsty and some changes in their bathroom habits. Perhaps there's a subtle weight loss despite a regular diet. These are early signals, urging us to pay attention.


As things progress, your pet might become less interested in activities, and mealtime may lose its charm due to occasional vomiting. These signs suggest it's time for a veterinary visit.


In the advanced stages, visible weight loss, weakness, and unpleasant breath may become more apparent.


Now, what sets off this health challenge? Aging, infections, genetics – they all contribute. Understanding these factors is like deciphering the puzzle pieces behind CKD.


In conclusion, we, as pet parents, play a crucial role. By staying aware, recognizing these subtle signs, and collaborating with our veterinarians, we become the guardians of our furry companions' health. Here's to a future where our dogs thrive in good health, and our commitment to their well-being remains steadfast. 🐾✨


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