Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Rottweiler vs Mastiff: The Differences (With Pictures)

Share

Rottweiler vs Mastiff

The Rottweiler and Mastiff look very different at first glance, but these breeds are distant relatives with an ancient Roman background. Rottweilers and Mastiffs are large breeds and, historically, have served and protected in many ways. But don’t be fooled by their appearance; these dogs are big softies at heart.

Rottweilers and Mastiffs are excellent family dogs. The question is, what kind of family do these dogs belong to, and what makes them so different?

Dogster divider_v3_NEW_MAY_24_

Visual Differences

Dogster_Side by Side Comparison_ Rottweiler vs Mastiff
You’re welcome to use our images, but we require you link directly to this site for credit (ex. Image from Dogster)

At a Glance

Rottweiler
  • Average height (adult): 22-–27 inches
  • Average weight (adult): 80–135 pounds
  • Lifespan: 9–10 years
  • Exercise: 1 hour or more
  • Grooming needs: 
  • Family-friendly: Yes
  • Other pet-friendly: Sometimes
  • Trainability: Easy

Mastiff
  • Average height (adult): 27–30 inches
  • Average weight (adult): 125–230 pounds
  • Lifespan: 6–10 years
  • Exercise: 20–30 minutes
  • Grooming needs: Moderate
  • Family-friendly: Yes
  • Other pet-friendly: Sometimes
  • Trainability: Moderate

Dogster divider_v2_NEW_MAY_24_

Rottweiler Overview

9-month-old-rottweiler
Image Credit: Liliya Kulianionak, Shutterstock

Rottweilers have strong protective instincts and are very territorial. With a glistening black coat, Rottweilers stand tall and proud—almost as tall as a Mastiff.

Unlike Mastiffs, Rottweilers strut around with confidence and courage, but not too much if trained well. They have a lot more energy to exert, too, so these dogs need a job or activity.

The Butcher’s Dog of Rottweiler

Although not as large, Rottweilers are close relatives to Mastiffs. The Roman Empire bred many dog breeds for various reasons, and the Rottweiler was one of them.

But Rottweilers didn’t earn their infamous German name until after the Roman Empire collapsed and they were left behind. With no more Roman masters, Rottweilers earned their place as cattle dogs in German cattle towns, helping move the herds from pasture to market.

Rottweilers protected the cattle from thieves and predators, eventually earning them the name Rottweiler Metzgerhund, meaning Butcher’s Dog of Rottweil.

rottweiler training
Image Credit: cynoclub, Shutterstock

Exercise

Rottweilers love to be active and can excel in almost any sport or task, especially if companionship is involved. Two vigorous 20-minute runs daily are best, ideally with an owner or dog walker.

Training

Rottweilers crave human companionship and excel at training when there is a strong bond with an owner already present. These dogs are eager to please and will do very well in training for a chance to show off to their owners.

Rottweilers are headstrong, so a little stubbornness is expected. Puppy classes and continued training can help shape your Rottweiler to be the great leader he can be.

rottweiler dog sitting on the grass outdoors
Image Credit: KevinSeibel , Unsplash

Grooming

Rottweilers require weekly brushing and regular bathing. They shed moderately throughout the year and will shed profusely twice a year. Keep the nails trimmed and teeth brushed as needed.

Suitable For:

A well-trained Rottweiler is a great addition to any family that can be regularly present. Rottweilers do well with other animals and children and can adapt easily to sudden changes. They are more physically active, so they do best with owners who are equally active.

Mastiff Overview

english mastiff
Image Credit: Michal Ninger, Shutterstock

No matter your size, a Mastiff will make you feel a little smaller upon entering the room. These giants measure around 30 inches tall and well over 120 pounds at a minimum. But their size isn’t what makes people fall in love with Mastiffs—it’s their keen sense of protective instincts and undying loyalty tied together by an unmatched tenderness.

Mastiffs are like the grandpa of dogs. They have a lifetime’s worth of strength and knowledge, yet the patience to undergo a small child’s pranks. They’ve perfected balancing temper, courage, and generosity to create a true gentle giant.

The Ancient British Giant

For centuries, the Mastiff thrived on the British Isles until 55 BC when Julias Caesar invaded Britain. Caesar was impressed by the Mastiff’s ability to fight against his army and decided to bring a few dogs back with him for blood sport.

The breed remained on the East side of the world until after WWII when they faced extinction. US breeders had Mastiffs exported to North America so they could help rebuild the breed. Now, the Mastiff is number 37 out of 287 breeds in America.

mastiff with red eyes lying on the floor
Image Credit: A Wild Hair Creative, Shutterstock

Exercise

Unlike other large breeds, Mastiffs have low exercise requirements. A simple walk and some free play will do the trick.

As a rule, keep exercise sessions short—no more than 2 miles per walk. Mastiffs are notorious for plopping down in the middle of a walk when they’ve decided they need to rest. If you reach this point, expect to stay there for a while.

Training

Mastiffs are highly intelligent, eager to please, and house-train easily. Generally, these dogs are easy to train. However, they can be quite stubborn and are extremely powerful in size. Mastiffs also get their feelings hurt easily.

Short, upbeat training sessions are best to maintain the full attention of your Mastiff and keep you from pushing yourself too hard in training and potentially raising your voice. If your Mastiff decides to lie down in the middle of training, try making eye contact with them. Mastiffs are masters at reading facial expressions.

brindle mastiff dog standing in the middle of the park
Image Credit: Ricantimages, Shutterstock

Grooming

Mastiffs require no special grooming treatments. A simple brush once per week and a bath as needed get the job done. Remember to keep the nails trimmed and the teeth brushed.

Suitable For:

With a Mastiff, where you live doesn’t matter. Mastiffs are clean, quiet indoor dogs who do very well in families with small children.  Mastiffs require companionship at all times, so they do best with families who are home more often than not. Because of their size and power, Mastiffs need homes with experienced dog owners.

Dogster_Website dividers_v1_Jan 18 2024-03

Which Breed Is Right for You?

Rottweiler vs Mastiff
Image Credit: Left: (Serova_Ekaterina, Shutterstock); Right: (Ricantimages, Shutterstock)

If you’re unsure of which breed is right for you, consider these facts.

Mastiffs are gentle giants that do very well with small children and (usually) other pets. They don’t require much grooming and exercise, but because of their size and power, they do best with experienced dog owners.

On the other hand, Rottweilers are a bit more active and like to be the leaders of the pack. These dogs need vigorous exercise daily and are very territorial. That said, a well-trained Rottweiler will do just fine around small children and animals. They don’t require any special grooming procedures but need a brush and bath more often than Mastiffs.

Ultimately, Rottweilers are best for active families, and Mastiffs are best for more laid-back families. Which one works best for you?


Featured Image Credit: (T) Serova_Ekaterina, Shutterstock | (B) Michelle Cavanagh, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Ask Dr. Paola- Help! My Dog’s Sleeping Habits Have Changed! (May 18, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

The Crate Setup Most Dog Owners Get Wrong (And How To Fix It!)

Most people assume that if their dog hates the crate, the crate is the problem. So they try a bigger one, a different...

1,500 Beagles Rescued from Wisconsin Lab Farm – Here’s Where They’re Going

You may remember that a few weeks ago, we reported on a tense situation at Ridglan Farms, Wisconsin, a facility infamous for housing...

Dogster’s Weekly Photo Contest Winners: Window Watchers (May 11, 2026)

Every week our team gets the privilege of sorting through our readers photos to choose what dogs will win this weeks contest! See...

More related

12 Loose-Leash Walking Tips for You & Your Pup (Vet-Approved)

Walking your best furry friend should be a joyous experience, but if your pup is pulling on the leash like a sled dog,...

Can a Dog’s Nose Get Sunburned? Vet Approved Facts & FAQ

Most of us understand the dangers of sunburn when it comes to humans. It’s not only painful, but it enhances the likelihood of...

Do Golden Retrievers Need Grooming & How Often? Vet-Approved Tips

Golden Retrievers have iconic, beautiful coats that are luscious and soft to the touch. They have two layers of fur—one water-repellent outer coat...

How to Train a Maltipoo: 9 Vet-Approved Tips

Maltipoos are a cute combination of a Poodle and a Maltese, and they are sweet, playful, and highly intelligent. Not only are Maltipoos...

Keep reading

8 Best Foods for French Bulldog Puppies in 2026 – Reviews & Top Picks

With their small stature and adoring personalities, French Bulldogs are among the most popular medium to small dog breeds. Frenchies are well known for their happy-go-lucky personalities and cute faces. Their easy-going nature extends to their food, and they are...

french bulldog eating food from bowl

Can Dogs Eat Tuna? Vet-Verified Health & Nutrition Facts

Many dogs love fish, and its strong, distinctive scent never fails to get their mouths watering. But does that mean dogs can safely eat tuna? Tuna is not toxic to dogs. Adult dogs can eat plain, water-packed, light canned tuna...

Can Dogs Eat Tuna

What to Do With Leftover Dog Food? 6 Great Ideas

No one wants to deal with leftover dog food. Perhaps your dog has passed away, or maybe your pet just doesn’t like the type of food you bought. Most people don’t buy more food than their dogs can typically eat,...

Open canned pet food

Dr. Marty Nature’s Blend Dog Food Review 2026: Our Expert’s Opinion

Review Summary Dr. Marty is a pet food company founded by long-time veterinarian, Dr. Marty, whose focus for the past 45 years has been on creating healthy and nutritious all-natural foods for dogs and cats. Dr. Marty’s mission is to...

Dogster_Dr. Marty Nature’s Blend Dog Food Review

Performatrin Dog Food Review 2026: Recalls, Pros & Cons

Review Summary You might not recognize the name Performatrin Dog Food, nor are you likely to find it without a lot of looking in the United States. That’s because it’s the house brand of the Canadian-based retailer Pet Valu. The...

Dogster_Performatrin Dog Food Review

Is Insect-Based Dog Food Safe for My Pet? Vet Approved Facts & FAQ

Does the thought of eating a cricket or grasshopper make your stomach churn? Despite the “yuck” factor, many bugs are protein-rich. While you may not be interested in eating bugs, your dog might be! Insect-based pet food has hit the...

French bulldog eating from a bowl

Feeding Your Maltipoo: A Vet-Approved Guide

Maltipoos (a mix between a Miniature or Toy Poodle and a Maltese) are a popular breed due to their absolute adorableness and extreme cuddliness. These pups make excellent pets for adults and children alike, as they’re small, friendly, and playful....

Maltipoo dog near feeding bowl with dry food on floor in kitchen

9 Best High-Fiber Dog Foods in 2026 – Reviews & Top Picks

While dogs are often thought of as being mostly meat eaters, fiber also plays an important role in maintaining the good health of our canine companions, especially their digestive system. Dietary fiber is part of edible plants that can’t be...

Schnauzer puppy dog eating tasty dry food from bowl

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Dogster Email Newsletter