To teach your cat to ring a bell, hang a small bell within their reach. Guide their paw to the bell or entice them to bat at it naturally. When the bell rings, immediately reward your cat with a favorite treat. Consistency and positive reinforcement are key. You can introduce variations like ringing the bell to signal mealtime, opening a door, or receiving a new toy as they learn. This trick takes advantage of a cat's natural curiosity and ability to associate actions with rewards, making it fun and mentally stimulating for them.