Mastiff vs Saint Bernard

Where Mastiff and Saint Bernard differ most

• Adult weight: Mastiff 120–230 lbs · Saint Bernard 120–180 lbsMastiff heavier
• Grooming needs: Mastiff 1/5 · Saint Bernard 3/5Saint Bernard more upkeep
• Shedding: Mastiff 3/5 · Saint Bernard 4/5Saint Bernard sheds more
• Good with kids: Mastiff 4/5 · Saint Bernard 5/5Saint Bernard rated higher
• Good with other pets: Mastiff 3/5 · Saint Bernard 4/5Saint Bernard rated higher
• Vocalization: Mastiff 1/5 · Saint Bernard 2/5Saint Bernard more vocal

Full trait-by-trait breakdown

Which one should you choose?

Two of the most low-key giant breeds around, and the comparison mostly comes down to grooming and general demeanor rather than energy, since both are content with minimal daily exercise. The Saint Bernard tends to be a touch more food-motivated and willing in training than the more independently-minded Mastiff, and it's bred in both a short-haired and a long-haired variety, whereas the Mastiff offers just the one low-fuss, short coat that needs almost no brushing. Both breeds are famously gentle and patient with kids, a genuine hallmark of each. Both come with the higher food, vet, and space costs typical of the largest breeds, along with shorter lifespans worth discussing with a vet ahead of time. Choose the Saint Bernard for a slightly more trainable, historically rescue-bred giant; choose the Mastiff for the simplest coat care and most sedentary daily routine.