Bones
... that the owner of World Champion bucking bull Bones exercised him in a mechanized circular walker in a deep sand pit?
... that the owner of World Champion <a href="./Bucking_bull" id="mwAhw" rel="mw:WikiLink" title="Bucking bull">bucking bull</a> <b id="mwAh0"><a href="./Bones_(bull)" id="mwAh4" rel="mw:WikiLink" title="Bones (bull)">Bones</a></b> exercised him in a mechanized <a href="./Hot_walker" id="mwAh8" rel="mw:WikiLink" title="Hot walker">circular walker</a> in a deep sand pit?