Bell peppers — Food safety facts
Safe to share · Cats · full breakdown on the linked food page
All colours are safe, raw or cooked, cut small. Mild and vitamin-rich.
Short answer
Yes, raw red bell pepper is safe for cats in small amounts. All colors of bell pepper are non-toxic whether raw or cooked, just cut it into cat-sized pieces. It's a mild vegetable rich in vitamins. Offer a tiny piece plain and watch for any stomach upset. Call your vet if your cat acts unusually after eating it.