"I don't know," said Jack. "It looks to me as if he were going to push the red bull all over the prairie; but, on the other hand, the little one is twice as quick and twice as active. What's more, I'll bet the red fellow has twice the wind of the other, and if he can tire out that big fat bull he'll make him run." "Yes," agreed Joe, "there's no doubt that if he's got the wit to work the fight right, he'll be able to drive the big bull; but if the big bull is smart, he won't let himself be tired out." "Well, let's see. Look at the way the big fellow is pushing back the little fellow now!" And certainly it seemed as if weight were beginning to tell, for, little by little, the red bull moved backward, and appeared to be quite unable to hold his opponent. In the meantime, the horns of both bulls began to show red as if smeared with blood. Farther and farther the red bull was pushed back. Presently he stopped resisting; by a nimble bound he sprang off to one side and, quickly circling, returned to the attack, as if trying to gore the big bull in the neck or shoulders. The big one had turned, however, and received the shock on his horns; and this time without much delay he pushed his enemy back. The red bull again jumped and again made a circle, and the big bull, seeing what was intended, faced to receive the charge on his horns. The two came together hard, and the sound of the shock was plainly heard. By this time both were weary and winded, and their long tongues hung out of their mouths and almost reached to the ground. It seemed now as if the red bull were trying to do precisely what Jack had spoken of a little while before--to tire out his stronger opponent--and it soon began to look as if he were succeeding. The big bull turned more slowly to receive the charge; and, while he had not as yet received any noticeable wound, he looked as if he would like to stop fighting, and to call the battle a draw. He began to look from one side to the other, and at last it was evident that he was trying to get away. "By gosh! the little fellow has got him whipped!" Joe cried. A moment or two later the big bull, when he had the opportunity, turned tail and trotted heavily off over the prairie away from the herd. The little one followed him, of course, and butted him in the hips with great force but his wide-spread horns did not cut the flesh. Each time the red bull hit his opponent, the big bull roared with fear, and the sight greatly amused the cowboys. "Come on," Joe said at last; "we mustn't let those fellows go too far. They've got to be brought back to the bunch." Jumping on their horses they followed the two, first turning the red bull, which was loath to leave the pursuit. Joe hurried him back to the herd, while Jack rode on a little way, turned the big bull, and slowly drove him to the bunch.