The Bell and The Cat, Aesop Fable (circa 550 bc). The Fable concerns a group of mice who debate plans to nullify the threat of a marauding cat. One of them proposes placing a bell around its neck, so that they are warned of its approach. Others applaud the plan, until one mouse asks who will place the bell on the cat. All then make excuses. The story is used to teach the wisdom of evaluating a plan not only on how desirable the outcome would be, but also on how it can be executed.