Hundreds of animal rights activists, many wearing red scarves and plastic horns, bared almost all in a march through the streets of Pamplona on Thursday to protest the annual running of bulls fiesta.
Chanting such slogans as "Torture isn't culture," and "Bulls yes! Bullfighters no!" the protesters attracted the attention of a couple of hundred curious onlookers.
Although it is billed as a nude protest, Peta supporters have begun to wear more clothes, so as not to upset some locals or attract too much unwanted attention.
Belgian Jos Bruynoogha, 55, said the number of topless women definitely made being passionate about animal rights more attractive. "I like the animals, but I like the people, too," he said.