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American Staffordshire Terrier vs Newfoundland: Which Suits Your Home?

American Staffordshire Terrier or Newfoundland? On paper they differ most on grooming need, and on the scales Newfoundland is the heavier at 100–150 lbs. Here is how the two compare on everything that shapes an ordinary week.

This is for someone already down to American Staffordshire Terrier and Newfoundland and deciding between them. For this pair the decision usually turns on grooming need and energy level, so those are covered first and in most detail. Anyone choosing from a flat has a clear answer here: American Staffordshire Terrier rates 3/5 against 1/5. The focus throughout is on daily consequences rather than breed background.

Quick verdict

Between American Staffordshire Terrier and Newfoundland, grooming need is what separates them, and American Staffordshire Terrier is the lower-effort dog of the two to keep.

Choose american staffordshire terrier if...

Choose American Staffordshire Terrier if you are in a flat or a smaller home, you do not want a standing grooming appointment and shedding is a problem in your house.

Choose newfoundland if...

Choose Newfoundland if your walking routine is modest, there are young children at home and you already have another dog.

Head-to-head comparison

Feature	american staffordshire terrier	newfoundland	Winner
Size class	medium	giant	Equal
Weight	40–70 lbs	100–150 lbs	Equal
Height	17–19 in	26–28 in	Equal
Lifespan	12–16 years	9–10 years	american staffordshire terrier
Exercise need	High (4/5)	Moderate (3/5)	newfoundland
Grooming need	Very low (1/5)	High (4/5)	american staffordshire terrier
Shedding	Moderate (3/5)	Very high (5/5)	american staffordshire terrier
Energy level	High (4/5)	Low (2/5)	Equal
Barking	Low (2/5)	Low (2/5)	Equal
Apartment suitability	Moderate (3/5)	Very low (1/5)	american staffordshire terrier
Good for first-time owners	Moderate (3/5)	Moderate (3/5)	Equal
Tolerates being alone	Moderate (3/5)	Moderate (3/5)	Equal
Trainability	High (4/5)	High (4/5)	Equal
Good with kids	High (4/5)	Very high (5/5)	newfoundland
Good with other dogs	Low (2/5)	High (4/5)	newfoundland
Friendly to strangers	High (4/5)	High (4/5)	Equal
Cost level	Moderate (3/5)	Very high (5/5)	american staffordshire terrier
Coat	Short, stiff and glossy	Heavy water-resistant double coat	Equal
Origin	Various	Various	Equal
Typical monthly cost	$100–$200	$150–$310	Equal
Typical first-year cost	$1,400–$2,900	$2,200–$4,200	Equal

Deep dive

Size and build

A Newfoundland outweighs an American Staffordshire Terrier by as much as 110 pounds. At 100-150 lbs and 26-28 inches, the Newfoundland is a giant-breed dog; the Am Staff, at 40-70 lbs and 17-19 inches, is solidly medium. Furniture, car trunks, and vet scales all need to be rethought if you're going Newfoundland.

Energy and exercise

Despite its size, the Newfoundland is the calmer of the two, low energy (2/5) and a moderate 3/5 exercise need, against the Am Staff's high energy (4/5) and 4/5 exercise requirement. A Newfoundland is happy with a couple of solid walks; the Am Staff wants more structured activity to burn off its drive.

Grooming and shedding

The Am Staff's coat needs almost no upkeep (1/5 grooming) and sheds moderately (3/5). The Newfoundland flips that entirely: high grooming demand (4/5) and very heavy shedding (5/5) from its double coat, built for cold water, not for staying off your couch. Expect a vacuum upgrade with the Newfoundland.

Apartment living, noise and time alone

Both dogs are quiet, low barking (2/5) across the board, so noise isn't the deciding factor here. Space is: the Am Staff rates a moderate 3/5 for apartment living, the Newfoundland a very low 1/5. A 120-pound dog with a thick coat does not thrive in 700 square feet.

Training and owner experience

Both breeds train at a high 4/5 level and score identically, 3/5, for first-time-owner suitability. The practical difference is physical: a poorly leash-trained Newfoundland is a genuinely hard dog to control given its size, so the training window matters more even if the trainability scores match.

Kids, other dogs and visitors

The Newfoundland pulls ahead with kids, 5/5 versus the Am Staff's already-solid 4/5, and with other dogs, 4/5 versus 2/5, it's a breed literally nicknamed the nanny dog. Both are equally friendly to strangers at 4/5. If you have other dogs in the house, that gap is significant.

Health and lifespan

Lifespan is the sharpest contrast in this whole comparison: 12-16 years for the Am Staff against just 9-10 for the Newfoundland, typical of giant breeds. The Newfoundland's health list is cardiac-heavy, subaortic stenosis, dilated cardiomyopathy, plus bloat and cystinuria, while the Am Staff's five conditions skew orthopedic and dermatological.

Cost to keep

The Newfoundland costs more to keep at every stage: $150-310 a month against the Am Staff's $100-200, and $2,200-4,200 in year one versus $1,400-2,900. Food alone for a 130-pound dog adds up fast, and the Newfoundland's cost rating, very high at 5/5, reflects that size tax directly.

American Staffordshire Terrier vs Newfoundland at a glance

American Staffordshire Terrier weighs 40–70 lbs and lives 12–16 years; Newfoundland weighs 100–150 lbs and lives 9–10 years. The two diverge most on grooming need, energy level and apartment suitability and 3 other rated axes. They are level on tolerates being alone, barking and good for first-time owners, so those cannot decide it. The table below marks a winner only where one breed is genuinely easier for a typical owner; size and origin are facts rather than merits and stay level. Ratings come from one source applied to both breeds, so they are meaningful against each other rather than as absolute scores.

Frequently asked questions

How much bigger is a Newfoundland than an American Staffordshire Terrier?

Substantially, 100-150 lbs versus 40-70 lbs, and 26-28 inches versus 17-19. The Newfoundland is a giant breed; the Am Staff is a medium one.

Which sheds more?

The Newfoundland, rated very high (5/5) thanks to its heavy double coat, against the Am Staff's moderate 3/5. Expect daily brushing to keep a Newfoundland's shedding manageable.

Is either breed good with young kids?

Both score well, but the Newfoundland edges ahead at a full 5/5 versus the Am Staff's 4/5, it's built a reputation as a patient, gentle giant around children.

Which breed lives longer?

The Am Staff, by a wide margin, 12-16 years against the Newfoundland's 9-10. That's one of the steepest lifespan gaps you'll find in a breed comparison.

What should I budget monthly for a Newfoundland versus an Am Staff?

$150-310 for the Newfoundland versus $100-200 for the Am Staff. First-year costs follow the same ratio, $2,200-4,200 versus $1,400-2,900.

Do these two breeds share health risks?

Hip dysplasia and bloat both appear on the Newfoundland's list; only hip dysplasia overlaps with the Am Staff's. Otherwise the Newfoundland's risks are cardiac-focused while the Am Staff's are more orthopedic and skin-related.

Can a Newfoundland live in an apartment?

Not well by this data, it rates a very low 1/5 for apartment suitability against the Am Staff's moderate 3/5. Size, coat, and low apartment tolerance make it a house-and-yard breed.

Quick answers

View more answers

Living

Overall, which is the better fit for most homes?

The Am Staff for anyone in an apartment or with a tighter budget; the Newfoundland for a house with space and a family wanting a famously gentle giant.

Costs

How much more does a Newfoundland cost monthly?

Roughly $50-110 more than an Am Staff, $150-310 versus $100-200, mostly driven by food volume and grooming.

Training

Which has the higher exercise need?

The Am Staff, at 4/5 versus the Newfoundland's 3/5, despite being the much smaller dog.

Health

Which breed has the shorter expected lifespan?

The Newfoundland, typical for a giant breed at 9-10 years versus the Am Staff's 12-16.

Related DogBreedCompass guides

American Staffordshire Terrier breed guide – Readers comparing the two usually want the full profile of American Staffordshire Terrier before deciding.
Newfoundland breed guide – The same for Newfoundland, so the comparison can be checked against the detail.
American Staffordshire Terrier vs American Pit Bull Terrier – American Pit Bull Terrier is the closest breed to American Staffordshire Terrier on the measured axes, so it is the natural next comparison.
Newfoundland vs Saint Bernard – Saint Bernard sits closest to Newfoundland, which makes it the alternative worth ruling out.
What American Staffordshire Terrier costs to keep – Anyone weighing these two is usually also pricing them, and the cost pages carry city-level figures.
Newfoundland health problems – The health pages set out what each breed is actually screened for.

Related guides

Comparison

Important reminder

Health information here is general and is not veterinary advice. If your dog shows pain, sudden behaviour change, or worsening symptoms, consult a licensed veterinarian.

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