Frogs should eat fireflies.

They wonder why they should eat fireflies? Well, what they suggested is that when a frog eats a firefly, after a few seconds or minutes, the frog dies, because it gets intoxicated, so for the young, they would learn to keep away their frogs from fireflies, and they would also know that fireflies are toxic to frogs.

That would be my idea, I hope you like it.

                                                                  Thanks for your attention!