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!