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Early signs of kidney disease in cats
Kidney disease is a leading concern for aging cats — catching thirst and weight changes early improves management.
5 min read
Educational information only — not veterinary medical advice. Always consult a licensed veterinarian for diagnosis and treatment.
Chronic kidney disease (CKD) is common in cats over 10. Kidneys lose the ability to concentrate urine, so cats drink and urinate more, then may lose weight and appetite as toxins rise.
Bloodwork, urine specific gravity, and blood pressure checks detect CKD before cats look "sick."
Watch for these changes
- Large clumps in the litter box or more frequent urination
- Weight loss despite good appetite (later: poor appetite)
- Coat looking unkempt or vomiting
- Quiet, withdrawn behavior in a formerly social cat
Management basics
Prescription renal diets, hydration (fountains, broths approved by your vet), phosphorus binders, and medications are tailored to stage. Home subcutaneous fluids are common in later stages.
Common questions
- Can wet food prevent kidney disease?
- It supports hydration but doesn't prevent CKD. Regular senior blood panels are the best early detection tool.