Factual error: While Ferdinand and the bulls are running free in Madrid they pass by the Puerta de Alcalá monument with a set of three columns and a door in the middle. The drawing is actually missing two huge blocks with 2 doors on each side.
Sacha
Answer: There could be any number of reasons. The owners may have felt that just letting the bulls go was the morally right thing to do without profiting from it.
raywest