His great eyes were distended.

Ned had never before seen such a picture of terror.
The boy raised himself a little in the grass, but not so high that he would be seen by an enemy.

It was his first idea that Mexicans had come, but the horse would not show such fright at the presence of human beings.

He looked in the direction opposite to the spot on which the horse was standing.

At first he saw nothing, but with intent looking he detected a great body crouched in the grass and stealing forward slowly.
It was their old enemy, the jaguar, not a black one but tawny in color.
Ned's rage rose.