Then he fired and had the satisfaction of seeing the cow fall again, apparently to stay down this time.
But his satisfaction was short.

He heard a heavy tread and an angry snort beside him.

He caught the gleam of a long horn, and as he whirled the big bull was upon him.

He leaped aside instinctively and escaped the thrust of the horn, but the bull whirled also, and the animal's heavy shoulder struck him with such force that he was knocked senseless.
When Robert came to himself he was conscious of an aching body and an aching head, but he recalled little else at first.

Then he remembered the fierce thrusts of the angry old bull, and he was glad that he was alive.