Great Dane vs Mastiff
Side-by-side comparison for prospective owners weighing both breeds.
| Trait | Great Dane | Mastiff |
|---|---|---|
| Weight | 110–175 lbs | 120–230 lbs |
| Lifespan | 7–10 yrs | 6–10 yrs |
| Est. monthly cost | $150–$280 | $150–$280 |
| Energy level | ||
| Grooming needs | ||
| Shedding | ||
| Trainability | ||
| Good with kids | ||
| Good with other pets | ||
| Vocalization |
Where Great Dane and Mastiff differ most
- Adult weight: Great Dane 110–175 lbs · Mastiff 120–230 lbsMastiff heavier
- Energy level: Great Dane 3/5 · Mastiff 2/5Great Dane higher-energy
- Daily exercise: Great Dane ~45 min · Mastiff ~40 minGreat Dane needs more
- Trainability: Great Dane 4/5 · Mastiff 3/5Great Dane easier to train
- Vocalization: Great Dane 2/5 · Mastiff 1/5Great Dane more vocal
Full trait-by-trait breakdown
| Trait | Great Dane | Mastiff | Verdict |
|---|---|---|---|
| Adult weight | 110–175 lbs | 120–230 lbs | Mastiff heavier |
| Energy level | 3/5 | 2/5 | Great Dane higher-energy |
| Daily exercise | ~45 min | ~40 min | Great Dane needs more |
| Grooming needs | 1/5 | 1/5 | About the same |
| Shedding | 3/5 | 3/5 | About the same |
| Trainability | 4/5 | 3/5 | Great Dane easier to train |
| Good with kids | 4/5 | 4/5 | About the same |
| Good with other pets | 3/5 | 3/5 | About the same |
| Vocalization | 2/5 | 1/5 | Great Dane more vocal |
| Lifespan | 7–10 yrs | 6–10 yrs | About the same |
| Est. monthly cost | $150–280 | $150–280 | About the same |
Which one should you choose?
Two of the heaviest breeds around, but their energy levels and grooming needs still manage to differ meaningfully. The Mastiff runs even lower-energy than the already-calm Great Dane, content with minimal daily exercise and most at home lounging indoors, while the Dane, despite its size, carries a bit more playful enthusiasm and benefits from a slightly more active routine. Both have short, simple coats requiring little grooming. Trainability is comparable, with both breeds willing but not urgently eager, responding best to patient, consistent, low-pressure methods. Both are patient around children as a rule, though their sheer size and weight mean even affectionate behavior calls for supervision around small children. Health and lifespan considerations matter for either giant breed and are worth discussing directly with a vet. Choose the Mastiff for the most sedentary giant-breed experience; choose the Great Dane for a slightly more active, famously goofy giant temperament.
Whichever breed fits your life, consider adoption or breed-specific rescue first — many purebred and mixed-breed dogs and cats are already waiting for homes.
General breed information, not veterinary advice — consult a vet for your pet's specific health, diet, and behavior needs.