The Doomswoman by Gertrude Atherton

A rodeo was held the next day, -- the last of the festivities; -- Don Guillermo taking advantage of the gathering of the rancheros. It was to take place on the Cerros Rancho, which adjoined the Rancho de las Rocas. We went early, most of us dismounting and taking to the platform on one side of the circular rodeo-ground. The vaqueros were already galloping over the hills, shouting and screaming to the cattle, who ran to them like dogs; soon a herd came rushing down into the circle, where they were thrown down and branded, the stray cattle belonging to neighbors separated and corralled. This happened again and again, the interest and excitement growing with each round-up.

Once a bull, seeing his chance, darted from his herd and down the valley. A vaquero started after him; but Reinaldo, anxious to display his skill in horsemanship, and being still mounted, called to the vaquero to stop, dashed after the animal, caught it by its tail, spurred his horse ahead, let go the tail at the right moment, and, amidst shouts of "Coliar! " "Coliar! " the bull was ignominiously rolled in the dust, then meekly preceded Reinaldo back to the rodeo-ground.