Each sentinel moves up toward the place from which he heard the leader's voice come. And on his way there he tells all the buffaloes he meets to move up also. Besides, all the buffaloes hear the leader's voice too; so they begin to close up at once. Is not that a wonderful way of bringing up all those that are lagging behind? But let us watch the herd again. They have closed up now, and there is no big gap in their line. The ground is level again. Let us move on from thicket to thicket, and come as near the buffaloes as we can. What is that? See! The sentinel on the right is looking hard at that jungle grass far away to the side. This kind of jungle grass grows very tall, taller than a man. But why is the sentinel staring at the tall grass? What does he see there? Yes, there, far away, something is happening! The jungle grass is waving gently, but just in one place! What is making the tall grass wave like that? Is it the wind? No, it cannot be the wind! Why not? Because if it were the wind, _all_ the grass there would wave. Then what is making the tall grass wave in just one place? It can be only one thing! Some _animal_ is hiding there in the tall grass! And as the animal is coming nearer and nearer to the buffaloes, he is making the grass wave! See, the sentinel has guessed that also! What is he doing now? Can you _hear_ him? He gives a bellow, deep and long. "Danger! Look out!" That is what he means. The whole herd hears him. They all close up as near together as they can! Quick! Let us get up on that tree near by! _We_ are in danger as well as the buffaloes! One branch higher--and another! Now we are quite safe! But see what the buffaloes are doing! _Buffaloes Make a Ring when Tiger Comes_ The two ends of the crescent have come close together, and all the Papa buffaloes have made a perfect ring around the Mammas and the children. The Papas are facing the outside of the ring; so they can meet the danger from whatever side it comes. Why do they do that? Look again at the grass! The tall grass is waving nearer and nearer. So, the animal that is in the grass is coming nearer and nearer. He comes right to the end of the tall grass. There he makes a gap in the grass, and walks out into the open. It is a tiger! He was trying to sneak up to the buffaloes; but the sentinel found that out. And now the bull buffaloes are ready for him. The tiger growls in rage. He prowls round and round the ring of bull buffaloes, as you see in the picture. But he dare not try to break through those horns. He roars with fury, shaking the ground; it is just like thunder. The jungle around is taking fright at the roar. See! All the small animals rush out in fright--wild pigs, wild goats, and all sorts of small deer. [Illustration: The Tiger and the Ring of Buffaloes]