Kidney Failure in Cats

Kidney failure—also called chronic kidney disease (CKD)—is one of the most common conditions seen in older cats. It develops gradually as the kidneys lose their ability to filter waste, balance fluids, and support overall health. While CKD can’t be cured, early detection and management can greatly improve both quality and length of life.

Signs to Watch For

Early symptoms are often subtle. Increased thirst and urination are common first clues. As the disease progresses, cats may lose weight, have a poor appetite, vomit, seem lethargic, or develop bad breath. Because cats are masters at hiding illness, these changes are easy to miss.

Diagnosis and Treatment

Kidney disease is typically diagnosed with blood and urine testing. Once identified, treatment focuses on slowing progression and managing symptoms. This may include prescription kidney diets, increased water intake, medications to control nausea or blood pressure, and sometimes fluid therapy at home.

Living Well With Kidney Disease

Many cats with kidney failure continue to enjoy good quality of life for months or even years with proper care. Regular veterinary visits and monitoring allow treatment plans to be adjusted as needs change.

If your cat is drinking more, losing weight, or just “not acting like themselves,” a veterinary visit is important. Early intervention makes a meaningful difference—and gives cats the best chance to stay comfortable and happy.