Radicchio — Food safety facts
Safe to share · Cats · full breakdown on the linked food page
Safe in small amounts.
Short answer
Yes, a small amount of radicchio is safe for a cat with kidney disease. It’s low in calories and non‑toxic, so a few leaves won’t harm the kidneys. Serve it plain without dressing and monitor your cat for any signs of stomach upset. If you notice vomiting or other changes, give your regular vet a call.