Mr. tiger is the king of the forest, so he looks down upon everything in the world.One day, Mr. Frog sees Mr. tiger. "I'm stronger than you." says Mr. Frog."What? You are stronger than me? Let's have a match. Who can jump over the river ." says Mr. tiger.Mr. Tiger jump over the river. Mr. Frog bites Mr. Tiger’s tail, so he jumps over, too."Where is Mr. Frog? Ha, ha, I'm stronger!""Don't be so sure," says Mr. Frog with some fur in his mouth."What's in your mouth, Mr. Frog?""Well, yesterday I ate a tiger, and only left some fur.""My God! Help me!" Mr. Tiger runs away.