How much should crf cat eat daily?

A cat should eat enough calories to satisfy its metabolic needs - this is based upon age, weight and exercise level. For a typical 10# adult cat, approximately 1 cup of dry kibble or 2-3 cans of cat food (the larger size, not the Fancy Feast size) should be adequate.

A cat with chronic renal failure (crf) should modify the diet to decrease the protein and sodium content but the calorie count should remain consistent (unless the cat also needs to lose weight). There are several prescription diets available from your veterinarian that have been specifically formulated for cats with renal disease - they are more expensive, but they are also the best dietary option for cats with low kidney function.