How does Bimbo show loyalty in The Dog of Pompeii?

In "The Dog of Pompeii," Bimbo demonstrates loyalty through his unwavering devotion to his master, a blind boy named Tito. Despite the dangers posed by the impending eruption of Mount Vesuvius, Bimbo stays by Tito's side, guiding and protecting him. His loyalty is ultimately highlighted in the story's climax, where he sacrifices his own safety to ensure Tito's well-being, showcasing the deep bond and love between them.