Ultimo: the last; último tercio: the last third of the bullfight in which the bull is killed with sword and muleta.

Uretritis: gonorrhoea; common ailment in the peninsula. Referring to this there is a Spanish proverb: Más cornadas dan las mujeres: the women gore more often than the bulls.

Urinario: comfort station.

Utrero: three-year-old bull. Utrera is cow of the same age. Many bulls now sold to be fought in Spanish rings are little more than utreros. Bulls in which the crosses of different strains made in breeding have not turned out well are often very brave as calves and utreros, but steadily lose bravery after they are mature at four years. This is especially true of bulls raised in the province of Salamanca. Consequently their breeders try to pass as many utreros as they can as bulls; fattening them on grain to make the required weight. It is these bulls sold to be fought before they are mature which eliminate all emotion and seriousness from the bullfight and by depriving it of its fundamental necessity, the bull, do more than any other agency to discredit it.