Brussels Griffon vs Mastiff (English Mastiff): Which Suits Your Home?

Twelve pounds versus two hundred fifty — this might be the most lopsided size matchup on the entire site. The Griffon tops out at 10 inches tall; the Mastiff can clear 32 inches at the shoulder and outweigh the Griffon by twenty times over. Everything else on this comparison should be read with that gap in mind.

Surprisingly, both breeds rate a low 2/5 for exercise need — the Mastiff's size doesn't translate into a high-energy dog. It's a calm, low-drive giant rather than a working athlete. That said, a short walk means something different at 250 pounds than it does at 10; even low-effort exercise with a Mastiff takes more physical management.

The Mastiff actually needs less grooming (low, 2/5) than the Griffon (moderate, 3/5) thanks to its short, dense coat. Shedding runs the other way — the Griffon sheds lightly (2/5), the Mastiff moderately (3/5) — and a moderate shedding rating on a dog this size still means more total fur than a small dog's moderate rating would suggest.

The Griffon rates 5/5 for apartment living; the Mastiff rates 2/5, and that's before accounting for the physical space a 200-pound dog simply occupies. Barking favors the Mastiff, though — it's rated very low (1/5) against the Griffon's moderate (3/5), so a Mastiff in a house is often the quieter of the two despite being far harder to fit into an apartment.

Trainability ties at moderate (3/5) for both breeds, but first-time-owner suitability doesn't — the Griffon rates moderate (3/5), the Mastiff low (2/5). A Mastiff's size means training mistakes have bigger consequences; a dog this large needs to know basic manners before it's fully grown, which argues for owners with prior large-breed experience — first dogs are usually better started smaller.

With kids, the Mastiff rates very high (5/5) against the Griffon's moderate (3/5) — its calm, gentle temperament suits a busy household, size aside. Good with other dogs and friendly to strangers both tie at moderate (3/5). The Mastiff's reputation for gentleness with children is backed up by the numbers, even if its size demands supervision around small kids regardless.

The size gap shows up hardest in lifespan: the Griffon typically lives 12-15 years, the Mastiff just 9-11. Hip dysplasia is the one shared risk. The Mastiff's list otherwise runs toward large-breed and giant-breed conditions — bloat, dilated cardiomyopathy, bone cancer, arthritis — the kind of wear a huge frame accumulates faster than a 10-pound dog's ever will.

This is the largest cost gap in the comparison: the Mastiff rates very high (5/5) against the Griffon's moderate (3/5), with a monthly range of $150-$350 versus $80-$150 and a first-year cost of $2,200-$4,500 versus $1,100-$2,300. Budget for larger everything — food, crates, medication doses, and vet bills all scale with body weight, and pet insurance premiums typically run higher for giant breeds too.