Sentence:  If he has a bull to show, he will exhibit him as a jockey does a stallion, parading him on rising ground, thrusting his head up and of course sinking his back till it is hollow, and his haunch sticks out like a starved calf's, stuffed fro show with bog hay. This may be called <WSD>stallionizing</WSD>. 
Meaning of the word marked with <WSD> tags:  To behave like a stallion, especially to engage in sexual intercourse.