Do you know professional dog breeders define large dogs as weighing at least 50 pounds and standing at 24 inches tall, while giant breed dogs tend to weigh over 100 pounds and have larger proportions?
No doubt, massive dog breeds are a marvel of nature, with their towering heights, impressive physiques, and gentle personalities. However, owning these gentle giant dog breeds requires careful consideration and a specific set of circumstances.
If you are an active person with plenty of outdoor space, a love for adventures, and a willingness to invest your time and resources into training and care, then these massive, powerful dogs might be the perfect fit for you!
Experienced owner who understands the needs and challenges of the largest dog breeds will particularly relish these giant breeds.
In this article, we will explore the world of these giants, discussing their characteristics, needs, and personalities to help you decide if any one of these incredible dogs is right for you!
7 Massive Big Dog Breeds
1. Irish Wolfhound
You think you are ready for an Irish wolfhound? Think again! These massive dogs are among the tallest breeds in the world and require serious commitment and dedication. Before bringing one home, make sure you have got space, patience, and the resources to handle one.
First off, Irish Wolfhounds are huge- like seriously massive. You will need a spacious living area where they can roam and stretch out, recommends PDSA. When it comes to exercise, they need regular physical activity to stay happy and healthy.
Remember not to overdo it, as they are prone to joint issues. Mental stimulation is the key to engaging them in the training session, you can try as many puzzle toys as you want.
They can be stubborn, so focus on forming a strong bond with them through consistent training and positive reinforcement. Provide plenty of love and attention, and you will be rewarded with fierce loyalty and affection.
They are sensitive souls, so any harsh treatment won’t fly! Treat them with kindness and respect, and you will succeed!
2. Saint Bernard
So you want to bring home a Saint Bernard puppy. Here is what you need to know! Caring for this mountain dog from puppyhood to adulthood requires dedication and attention to their needs.
As a puppy, focus on their food, feed them a nutrient-dense diet, socialize them extensively, and train them with positive reinforcement. Provide a safe space for play and rest, and just be prepared for lots of energy and curiosity, highlights SBCA.
As they grow into adolescence, continue with training and increase their play time, and exercise to tire them out. Once they reach adulthood, be ready to maintain regular exercise and mental stimulation to keep them healthy and happy.
These furballs shed a lot, thanks to their thick double coat. They are also huge couch potatoes who drool everywhere, but they love their families a lot and have a lower life expectancy, which is common with these giant dogs.
3. English Mastiff

I am about to spill the tea on English Mastiffs! They are massive, majestic, and need some serious TLC. If you are thinking about getting one, buckle up because these not-so-friendly-looking dogs come with some major health concerns and issues!
Hip dysplasia, elbow dysplasia, and osteoarthritis are just a few of the mobility issues they can face. And let’s not forget about Gastric dilatation volvulus ( GDV), a life-threatening condition that waiting to ruin the party. Regular vet checkups are non-negotiable, suggests WebMD.
So, what is the secret to keeping them thriving? Feed them a balanced diet, give them regular exercise, and try to manage their weight. Oh, and don’t ever think about taking them out during hot weather, they are extremely heat sensitive!
Grooming is also necessary, including nail trimming, ear cleaning, wiping their mouth and chin and and brushing their coat! I know it’s a lot of work, but it’s worth it!
4. Leonberger
Now it’s time to meet the Leonberger, most people are not familiar with this rare breed! This majestic breed has a rich history.
Born in the 19th century, they were bred to resemble lions in the town crest of Leonberg, Germany. And, boy, did they succeed! With their regal look, marvelous presence, lion-like mane, no wonder this friendly dog is often called “Lion Like”!
First off, their distinctive double coat is a sight to behold, a thick coat with a coarse outer coat that comes in a range of colors, from lion yellow to reddish brown.
They are goofy, lovable fellows who follow you around the house, shedding a lot of fur and slobbering all the way. So, if you are ready for a teddy bear pup, this is a perfect match for you.
5. Anatolian Shepherd Dog

The next up is the Anatolian shepherd; these ancient guardians were originally bred for protecting livestock from wolves and bears for more than 1,000 years. Bred for function and not fashion, they are rugged, independent, and fiercely loyal.
Around kids, they are fairly gentle, patient, and watchful. But with other dogs? Assertive, to say the least. Socialization is the key to avoiding any dog drama!

The fact that many people don’t know about these calm and incredible dogs is that they are used for protecting endangered species in the Western US. By working alongside farmers and ranchers, they help to reduce conflicts between humans and wildlife.
They are alert and loyal, chasing away predators and keeping livestock safe, claims The Kennel Club. They are playing a vital role in maintaining the delicate balance of our ecosystem, acting as a valuable tool for protecting wildlife.
6. Great Pyrenees

Warning: Great Pyrenees ownership is not for the faint of heart! The ideal owner is someone who is experienced, patient, and passionate about this big, fluffy dog. You need a big backyard or a farm and a willingness to deal with regular grooming sessions!
Their coats tend to shed heavily, and they are also independent thinkers, so they need early training and constant socialization. They are also heat-sensitive and thrive well in cold weather and snow.

They love to herd cattle, other pets, and even small children. They are confident, strong-willed, extremely smart, and affectionate.
Thanks to their guarding instinct, they are naturally wary of strangers. It’s very essential to provide them with a stable home and respect their boundaries.
7. Neapolitan Mastiff

This unique wrinkly dog has a heart of gold! Regardless of their size, they are laid back and relatively low maintenance. What a relief! Right!
These big boys don’t need a marathon training session. Short, gentle walks and playtime will keep them happy. Just 20-30 minutes of daily exercise and you are good to go!

Neapolitan Mastiffs require regular grooming to prevent skin issues and keep those adorable wrinkles clean. You will need to brush their coat weekly, monitor their diet to prevent obesity, and provide plenty of love, attention, and a lot of snuggles!
In return, you will get a loyal pup who has the power to melt your heart with its cute snorts!
Conclusion
There you have it! A rundown on some of the most majestic big dogs! From the gentle Irish wolfhound to the dedicated Great Pyrenees, these dogs are sure to add some fun to your life.
Here are some other massive dogs that want a loving home to share, like the Bernese Mountain dog, Great Dane, Black Russian terrier, and French mastiff.
Each breed is unique, but they share one common thing: their massive size and loving personality. If you are ready to add a big, fluffy dog to your family, just remember love knows no size limits!
So go ahead, open your heart and your home to bring these incredible breeds and make them your unforgettable companions with a lifetime of snuggles, sloppy kisses, and unconditional love!