A local newspaper reports that the bull was being vaccinated at a veterinary clinic in Waco when it broke out of its corral Tuesday.
Officers say a man spotted the animal running down the street and gave chase, wielding a whip and lasso from a pickup truck with three or four police cars behind him.
Sgt. W. Patrick Swanton says the bull ran into a fenced yard after about 45 minutes. Two animal control cowboys were able to lasso it into a trailer.
Swanton says police were mostly concerned about the bull injuring pedestrians or interrupting traffic. No one was injured.