Breed comparison
Great Dane vs English Mastiff
The tall, sociable goofball versus the massive, mellow doorstop — giant-breed life with two different flavors of enormous.
People shopping for a gentle giant almost always land on these two, and the specs blur together — both are huge, sweet, short-lived, and expensive to feed. The lived difference is energy and mess: the Dane is taller, more playful, and more social; the Mastiff is heavier, sleepier, and a drool machine of legendary proportions.
Side-by-Side
| Great Dane | English Mastiff | |
|---|---|---|
| Group | Working | Working |
| Size | Giant | Giant |
| Height | 28-32 in | 27.5-30+ in |
| Weight | 110-175 lbs | 120-230 lbs |
| Lifespan | 7-10 years | 6-10 years |
| Coat | Short, smooth single coat | Short, straight double coat |
| Exercise | 60+ min/day | 45+ min/day |
| Puppy price | $1,500-$3,000 | $1,500-$3,500 |
| AKC popularity | #22 | #40 |
| Energy level | ||
| Trainability | ||
| Shedding | ||
| Grooming needs | ||
| Barking | ||
| Good with kids | ||
| Good with other dogs | ||
| Good with cats | ||
| Apartment friendly | ||
| First-time owners |
The Differences That Matter
Activity level & playfulness
Great Danes, especially under age three, are surprisingly bouncy — zoomies, play bows, and a genuine desire for daily walks and romping. English Mastiffs are among the most sedentary dogs alive; a mature Mastiff considers two moderate walks a full day and spends the rest napping. If you want a dog that hikes and plays fetch, that's the Dane; if you want a living rug with a heartbeat, that's the Mastiff.
The drool question
This decides the matchup for many households. English Mastiffs drool constantly and copiously — walls, ceilings, and guests all get slimed, and owners keep drool towels in every room. Great Danes drool too, especially after drinking, but tighter-lipped individuals are common and the overall volume is a fraction of a Mastiff's. If you're house-proud, the Mastiff will test you daily.
Sociability with strangers
Danes are typically friendly extroverts that greet visitors like long-lost family — their guarding value is purely visual. Mastiffs are calm but naturally more reserved and watchful with strangers, with a genuine (if slow-to-trigger) guardian instinct inherited from centuries of estate work. Neither is aggressive when well-bred, but the Mastiff takes its door-watching job more seriously.
Physical management
A Dane's problem is height — counters, tables, and car trunks are all within reach, and an excited Dane can knock an adult over with enthusiasm. A Mastiff's problem is mass — routinely 160-230 pounds, it cannot be physically moved if it declines to cooperate, and lifting an injured or elderly Mastiff is a two-person job that owners must plan for before old age arrives. Train polite leash manners early with either; you lose the strength argument by month eight.
Health & heartbreak
Both are heartbreak breeds with lifespans commonly in the 7-10 range. The Dane's most feared killer is bloat (GDV) — many owners opt for preventive gastropexy — along with dilated cardiomyopathy and osteosarcoma. The Mastiff shares bloat and cancer risks and adds more orthopedic issues from sheer mass: hips, elbows, and cruciate tears. Pet insurance for either giant is expensive but usually worth it; everything from surgery doses to beds costs more at this size.
Space & apartment reality
Counterintuitively, both can live in modest spaces because neither needs much room to sprawl — the Mastiff especially is a famous apartment couch potato if you can get it up the stairs. The Dane needs a bit more daily outing and its wagging tail clears coffee tables at head height. The real space constraints are your car, your sofa, and your food budget, not your square footage.
Get the Great Dane if...
Choose the Great Dane if you want a playful, people-loving giant that joins walks and family activities, and you can handle a dog whose head is at counter height and whose youth lasts a boisterous three years. Skip it if you can't commit to bloat vigilance — knowing GDV symptoms cold is non-negotiable Dane ownership.
Get the English Mastiff if...
Choose the English Mastiff if you want maximum dog with minimum motion — a calm, devoted, lightly-guarding homebody — and you can genuinely tolerate drool on every surface you own. Skip it if anyone in the house is frail (a leaning Mastiff is a physical force) or if you're not prepared for the logistics of moving a 200-pound dog in an emergency.
The bottom line
For most families the Great Dane is the more engaging companion — sociable, playful, and slightly less messy — while the Mastiff suits people who specifically want a mellow, low-exercise giant and can absorb the drool. Both demand the same clear-eyed acceptance: giant breeds are short-lived, expensive, and physically demanding in old age, so the honest question isn't which is better, but whether you're ready for giant-breed grief on a 8-year clock either way.
Frequently Asked Questions
Which is better with young children?+
Both are famously patient with kids when well-bred and supervised — the Mastiff's steadiness is legendary, and Danes are gentle if bumbling. The real risk with either is accidental: a Dane's happy tail and body checks can flatten toddlers, and a Mastiff can lean a small child into a wall without noticing. Supervision and teaching kids not to climb on the dog matter more than the breed choice.
How much does it cost to feed and vet these giants?+
Plan on roughly 6-10 cups of quality large-breed food daily — several hundred dollars a month at current prices — plus vet costs that scale with weight, since sedation, medications, and surgeries are dosed per pound. Preventive gastropexy (often done at spay/neuter) is a common extra for both breeds. Giant ownership is comfortably 2-3x the cost of a lab-sized dog over its lifetime.
What is bloat and why does everyone warn Dane owners about it?+
Bloat (gastric dilatation-volvulus) is when the stomach fills with gas and twists — it kills within hours without emergency surgery, and deep-chested giants top the risk list, with the Great Dane often cited as the highest-risk breed of all. Mastiffs are at serious risk too. Learn the signs (unproductive retching, distended abdomen, restlessness), know your nearest 24-hour emergency vet, and discuss preventive gastropexy with your vet for either breed.