Jerry watched him with smouldering eyes.

At the moment wild-dog's nose touched him, he uttered a warning growl.

Wild-dog sprang back and whirled away in headlong flight for a score of yards before he learned that he was not pursued.
Again he came back cautiously, as it was the instinct in him to stalk wild game, crouching so close to the ground that almost his belly touched.

He lifted and dropped his feet with the lithe softness of a cat, and from time to time glanced to right and to left as if in apprehension of some flank attack.

A noisy outburst of boys' laughter in the distance caused him to crouch suddenly down, his claws thrust into the ground for purchase, his muscles tense springs for the leap he knew not in what direction, from the danger he knew not what that might threaten him.