My cat has kidney disease — can she still have a small piece of plain cooked catfish?

Yes, a small piece of plain cooked catfish is generally safe for a cat with kidney disease. It's a source of protein, but managing protein intake is important for kidney patients, so this should be a rare treat, not a regular part of her diet. Ensure the fish is fully cooked, boneless, and has no added salt, spices, or batter. Always discuss any dietary changes with your vet, as they can advise based on your cat's specific condition and bloodwork.