They are two dogs that talk. They themselves are amazed. It’s night. They’re sitting on an old mat behind the bed of a soldier, second-lieutenant Campuzano, who is being treated for syphilis in Valladolid’s Resurrección hospital. The dogs belong to the brothers of La Capacha and accompany them at night with a lantern, so that they can see the alms they are given, as well as guarding the hospital. Unbeknown to Cipión and Berganza, Campuzano is listening to them and memorises everything he hears, as he then writes it in a dialogue, called that of the dogs.