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Chronic kidney disease
Chronic kidney disease is a progressive and irreversible loss of kidney function, common in older cats and also seen in dogs. The kidneys gradually become unable to properly filter waste from the blood. It is a slowly evolving disease that...
What is it?
Chronic kidney disease is a progressive and irreversible loss of kidney function, common in older cats and also seen in dogs. The kidneys gradually become unable to properly filter waste from the blood. It is a slowly evolving disease that develops over months or years.
This condition can result from natural aging of the kidneys, genetic diseases, repeated infections, high blood pressure or certain toxins. In many cases the exact cause remains unknown and the disease is simply linked to progressive wear of kidney tissue.
Advanced age is the main risk factor, especially in cats over 8 years old. Certain predisposed breeds, uncontrolled high blood pressure, chronic dental disease or an unbalanced diet can also increase the risk.
Commonly observed signs
These signs are neither exhaustive nor specific. Only a veterinarian can establish a diagnosis.
Common signs include excessive thirst, increased urination, gradual weight loss and reduced appetite. Lethargy, occasional vomiting and sometimes bad breath may also occur. These symptoms often appear late, when a large part of kidney function is already lost.
When to consult without delay
This list does not replace veterinary advice. It gathers situations that justify a prompt consultation.
Transmission
Chronic kidney disease is not a contagious disease and does not spread between animals or to humans. It results from an internal process specific to each animal, linked to age or individual health factors.
Diagnosis and care
Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.
If your pet shows signs suggesting a kidney problem, a veterinary consultation is essential for proper assessment. Only a veterinarian can evaluate the situation and suggest appropriate follow-up. Never attempt to intervene yourself without professional advice.
Prevention
Regular veterinary visits help detect early signs of kidney impairment through routine check-ups. A balanced diet, constant access to clean water and good dental hygiene help preserve kidney health. It is advisable to consult a veterinarian promptly if changes in behavior or thirst appear.
References
Content reviewed by the TunisieVet editorial team · Updated 08 August 2026
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