Even though Neapolitan mastiffs have a relatively short expected lifespan of 7–9 years, these gentle giants leave an indelible impression on their owners. Their massive size, wrinkled faces, and droopy jowls create an immediate impact. But it's their loyalty and affection that genuinely captures our hearts. Neapolitan mastiffs have a reputation for being among the most protective dogs, but they also possess a gentle nature that makes them great companions for families with children.