Alcatraz saw one solid old bay topple her offspring with a side-swing of her head.

She wanted an unobstructed view of the fight.
His interest in this by-play nearly proved his undoing for while his head was turned he heard a rushing of hoofs and barely had time to throw himself to one side as the black flashed by him.

Alcatraz turned and reared to beat the insolent stranger into the earth but he found that the leader was truly different from the sluggish horses of men.

A hundred wild battles had taught the black every trick of tooth and heel; and in the thick of the fight he carried his weight with the agility of a cat: Alcatraz had not yet swung himself fairly back on his haunches when the black was upon him, the dust flying up behind from the quickness of his turn.

Straight at the throat of the chestnut he dived and his teeth closed on the throat of Alcatraz just where the neck narrows beneath the jaw.