King Felipe won praise but also skepticism earlier this month when he attended a charity bullfight in Madrid.
Aside from people who oppose the activity, aficionados wondered whether the King — who got a standing ovation — really stands with them.
Don Felipe has not been as keen on attending bullfights compared to his father, King Juan Carlos, and his sister, Infanta Elena.
Both of them were helping open a new winery in the Basque Country during the Madrid bullfight.
Conventional wisdom says Queen Letizia is not partial to bullfighting. Neither is Queen Sofia, an animal rights advocate.
The late Duchess of Alba was also an animal rights advocate, but an ardent supporter of bullfighting as a Spanish tradition.