Labrador Retriever vs Mastiff (English Mastiff): Which Suits Your Home?

The Mastiff is in an entirely different weight class — 120 to 250 lbs against the Labrador's already-substantial 55 to 80, with height reaching 27-32 inches versus 21-24. A big male Mastiff can outweigh a Labrador by three times over. If you've never owned a giant breed, it's worth handling one in person before committing; the difference between 'large' and 'giant' is bigger than the numbers alone suggest.

This flips the usual large-dog assumption. The Labrador rates a demanding 5/5 for exercise need and 4/5 energy, while the Mastiff — despite being far bigger — sits at a low 2/5 for both. Mastiffs are famously low-drive dogs content to lounge for most of the day. If you want a giant breed without the giant exercise commitment, that's the Mastiff's real selling point.

Grooming ties low for both, 2/5 apiece. Shedding tips slightly toward the Labrador being worse, 4/5 against the Mastiff's 3/5, though anyone who's lived with a Mastiff knows drool is the bigger daily mess than fur. Neither breed demands a serious grooming routine, which is one area where size doesn't work against the Mastiff.

Both breeds score a low 2/5 for apartment suitability — size and space needs matter here regardless of exercise drive. The Mastiff is notably quiet, though, rating just 1/5 for barking against the Labrador's moderate 3/5, and it tolerates being alone better too, 3/5 against the Labrador's very low 1/5. A Mastiff in a bigger house can actually be the calmer household presence.

The Labrador rates far better for first-time owners, 5/5 against the Mastiff's 2/5, and trainability follows the same pattern, 5/5 against 3/5. A Mastiff's sheer size means training mistakes carry more weight literally — an untrained 200-lb dog pulling on a leash is a different problem than an untrained Labrador. This is not a breed for a first dog.

Good with kids ties at a strong 5/5 for both, and the Mastiff's famously gentle, protective temperament backs that up. Other dogs and strangers both favor the Labrador modestly, 5/5 against the Mastiff's 3/5 on each — the Mastiff tends to be more reserved and watchful with people and dogs it doesn't know, consistent with its protective streak.

The Labrador has a real lifespan edge for a large dog, 10-12 years against the Mastiff's 9-11 — giant breeds simply don't live as long. The overlap in health risk is striking: hip dysplasia, elbow dysplasia, cancer, bloat, heart disease, progressive retinal atrophy, and hypothyroidism all appear on both lists. The Mastiff's list adds dilated cardiomyopathy, bone cancer, and arthritis specifically, risks tied to carrying that much body weight.

The Mastiff is the far more expensive breed to keep — cost level 5/5 against the Labrador's 3/5, monthly costs of $150-350 versus $100-200, and a first year that can run $2,200-4,500 against $1,800-3,000. Food volume alone explains most of it; a dog eating for 200 lbs costs meaningfully more than one eating for 70.