Kidney Infection in Dogs

icon May 6, 2025
by:puaintapets

Kidney infections, also known as pyelonephritis, are serious health concerns for dogs. If left untreated, they can cause irreversible damage to the kidneys and even become life-threatening. As a responsible pet owner, it's crucial to recognize the early signs, understand the causes, know how to treat infections, and take proactive steps to prevent them.

In this comprehensive guide, we will discuss everything you need to know about kidney infections in dogs, including signs, causes, treatments, prevention methods, and warning signals. 

kidney infection in dogs​

Signs of Kidney Infection in Dogs

Recognizing the early signs of a kidney infection is critical to ensuring your dog receives timely veterinary care. Some common signs include:

  • Increased thirst (polydipsia)

  • Frequent urination (polyuria)

  • Accidents in the house

  • Blood in the urine (hematuria)

  • Pain or discomfort during urination

  • Foul-smelling urine

  • Lethargy and weakness

  • Loss of appetite

  • Vomiting and diarrhea

  • Fever

  • Weight loss

Because these symptoms can overlap with other conditions such as urinary tract infections (UTIs) or diabetes, it’s essential to consult your veterinarian for a proper diagnosis.

Kidney Infection in Dogs Symptoms

While the terms "signs" and "symptoms" are often used interchangeably, symptoms are generally what your dog feels internally. In a kidney infection, symptoms may include:

  • Persistent nausea

  • Discomfort or pain in the abdomen or lower back

  • General malaise

  • Dehydration

  • Depression

    kidney infection in dogs​

Some dogs may exhibit few symptoms, especially in the early stages. Regular veterinary checkups can help catch issues before they become severe.

Kidney Infection in Dogs: Diagnosis

Kidney infection in dogs is diagnosed through a combination of clinical signs, blood tests, urine analysis, imaging, and sometimes biopsy. Blood tests often reveal elevated kidney values, while urine tests may show abnormal protein levels. Veterinarians typically use ultrasound to detect structural abnormalities in the kidneys. In some cases, a kidney biopsy is performed to confirm the diagnosis and assess the severity of the disease.

kidney dysplasia in dogs​

What Causes Kidney Infections in Dogs

Kidney infections usually occur when bacteria enter the urinary tract and ascend into the kidneys. Common causes include:

  • Bacterial Infections: Typically stemming from urinary tract infections (UTIs).

  • Bladder Stones: These can create blockages, leading to bacterial growth and infection.

  • Kidney Stones: Similarly to bladder stones, they can harbor bacteria.

  • Chronic Urinary Tract Infections: Recurrent UTIs can increase the risk of kidney infections.

  • Weak Immune System: Puppies, senior dogs, or immunocompromised dogs are more vulnerable.

  • Congenital Defects: Abnormalities in the urinary tract can predispose a dog to infections.

  • Injuries or Surgical Procedures: Invasive procedures can introduce bacteria if not managed correctly.

Understanding these causes can help you stay vigilant in protecting your dog from this serious health threat.

Kidney Infection in Dogs Treatment

Treatment for kidney infections should be initiated as soon as possible to avoid permanent kidney damage. Common treatment options include:

1. Antibiotics

Veterinarians usually prescribe antibiotics to fight off the bacterial infection. Treatment can last several weeks to ensure complete eradication.

2. Hospitalization

In severe cases, dogs may require hospitalization for intravenous fluids, antibiotics, and supportive care.

3. Pain Management

Anti-inflammatory medications and pain relievers may be prescribed to make your dog more comfortable.

4. Surgery

If the infection is caused by bladder or kidney stones, surgery may be necessary to remove them.

5. Dietary Support

Special diets low in phosphorus and protein can reduce the workload on the kidneys and support healing.

Supporting Overall Health-------Puainta Krill & Salmon Oil

In addition to medical treatment, supporting your dog's immune system and overall health can make a significant difference. One excellent supplement is the Puainta Krill & Salmon Oil Skin and Coat Health for Dogs.

Highlights:

  • Packed with Omega-3 fatty acids (EPA and DHA) crucial for heart, kidney, and immune health.

  • Helps reduce inflammation, supporting recovery from infections.

  • Promotes a shiny coat and healthy skin.

  • Made from pure, sustainably sourced krill and salmon.

  • Easy to administer with food.

    SHOP NOW and Support Dogs' Kidney Health!

    Puainta® Fish Oil For Dog,Krill Salmon Oil,Omega 3 Supplement

Including a high-quality supplement like Puainta Krill & Salmon Oil in your dog's diet can help maintain kidney health and boost the immune system, reducing the risk of recurring infections.

How to Prevent Kidney Infections in Dogs

Prevention is always better than cure. Here are essential tips to prevent kidney infections in your dog:

1. Maintain Proper Hydration

Ensure your dog always has access to clean, fresh water.

2. Regular Veterinary Checkups

Routine urine and blood tests can detect infections early before they reach the kidneys.

3. Hygiene Matters

Keep your dog's genital area clean to prevent bacterial infections.

4. Prompt Treatment of UTIs

Do not ignore urinary symptoms. Early treatment of UTIs can prevent kidney infections.

5. Healthy Diet and Supplements

Feed a balanced, kidney-supportive diet and consider adding health-boosting supplements like Puainta Krill & Salmon Oil.

6. Manage Underlying Conditions

Proper management of diabetes, Cushing's disease, and other illnesses can help reduce infection risks.

kidney infection in dogs​

What Are the Warning Signs of a Kidney Infection?

Recognizing the warning signs can save your dog's life. Immediate veterinary attention is needed if you notice:

  • Persistent fever

  • Sudden lethargy or depression

  • Loss of appetite and vomiting

  • Blood in urine

  • Increased drinking and urination

If left untreated, kidney infections can progress to kidney failure, a life-threatening condition.

Can a Dog Recover from a Kidney Infection?

Yes, many dogs can make a full recovery from a kidney infection, especially when diagnosed early and treated aggressively. Most dogs recover from a kidney infection within 2 to 6 weeks with prompt and proper treatment. Severe cases may require up to 8 weeks or longer, depending on complications and the dog's overall health.

The key to a successful recovery includes:

  • Strict adherence to antibiotic regimens

  • Appropriate follow-up care

  • Proper hydration and nutrition

  • Monitoring for signs of recurrence

  • Immune system support through diet and supplements

Integrating Puainta Krill & Salmon Oil into your dog's routine can aid in recovery by reducing inflammation and promoting a strong immune response.

FAQ

What is the difference between a UTI and a kidney infection in dogs?

A urinary tract infection (UTI) affects the lower urinary tract (bladder and urethra), while a kidney infection (pyelonephritis) affects the kidneys. UTIs can lead to kidney infections if not treated.

How is a kidney infection diagnosed in dogs?

Veterinarians diagnose kidney infections through urine analysis, blood work, and sometimes imaging like ultrasound or X-rays.

Is a kidney infection in dogs contagious?

No, kidney infections are not contagious between dogs or from dogs to humans.

How long does it take for a dog to recover from a kidney infection?

Recovery time varies but often ranges from a few weeks to a few months, depending on the severity and response to treatment.

Can supplements help prevent kidney infections in dogs?

Yes, supplements rich in Omega-3 fatty acids, like Puainta Krill & Salmon Oil, support kidney health, reduce inflammation, and strengthen the immune system.

What should I feed my dog with a kidney infection?

A veterinarian may recommend a special diet low in phosphorus, protein, and sodium. Always consult your vet for specific dietary advice.

Can kidney infections in dogs be fatal?

If left untreated, severe kidney infections can lead to kidney failure and death. Prompt diagnosis and treatment are critical.

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