When it comes to choosing the right dog, size truly matters—especially for first-time or inexperienced pet owners. While big dogs can be lovable and loyal, some breeds grow so large and powerful that they can become difficult to manage without the proper training, space, or experience. In this blog, we’ll explore 7 dog breeds so large that people should think twice before owning them.
These breeds are known not just for their size, but also for their strong guarding instincts, high energy levels, and protective nature. Without consistent discipline and socialization, they can become too much for the average person to handle. Whether you’re considering getting a large dog or simply curious, understanding what makes these breeds challenging is essential for responsible ownership. Read on to discover which giant dogs might not be the best fit for every household and why staying away from them may be the safest choice.
1. Tibetan Mastiff
The Tibetan Mastiff is one of the largest and most powerful dog breeds in the world. Originally bred to guard livestock in the Himalayas, this breed can weigh between 90 to 150 pounds or more and stand over 26 inches tall at the shoulder. Their sheer size and thick, lion-like mane make them look incredibly intimidating. Tibetan Mastiffs are known for their strong guarding instincts and territorial behavior.
While they can be loyal to their families, they tend to be aloof and suspicious of strangers. These dogs require experienced handlers who can train and socialize them from an early age. Their stubborn and independent nature makes them unsuitable for novice dog owners. If not properly trained, their protective instincts can become aggressive, making them a potential threat in public or around unfamiliar people. Their strength and unpredictability are reasons why some countries have even banned the breed.
2. Kangal Shepherd
The Kangal Shepherd, originating from Turkey, is renowned for being one of the strongest dog breeds in the world, particularly noted for its powerful bite force. Weighing between 90 to 145 pounds, these muscular dogs were bred to protect livestock from predators like wolves and bears. Their incredible strength, combined with their protective instincts, makes them formidable guardians.
Kangals are known to be calm and gentle with their families, but they are naturally wary of strangers and other animals. Because of their strong territorial nature, they may act aggressively if they perceive a threat, even if it’s unintentional. They require constant training, socialization, and plenty of space to roam. A fenced yard is essential, as their guarding instincts can lead them to patrol wide areas. These dogs are best suited for rural environments and experienced owners who can manage their assertive behavior. For the average dog owner, handling a Kangal can be a daunting task.
3. Caucasian Shepherd (Caucasian Ovcharka)
The Caucasian Shepherd is a giant breed developed in the mountainous regions of Russia and Georgia to protect sheep from wolves and thieves. These dogs are massive, often weighing between 100 to 200 pounds, and stand at about 30 inches tall. With their thick fur and muscular build, they appear even larger than they actually are. Caucasian Shepherds are fiercely protective and naturally distrustful of strangers.
Their strong protective instincts make them excellent guard dogs, but they can become highly aggressive without proper training. These dogs are not suited for apartment living or urban environments. They require a strong and consistent owner who can enforce rules and provide ample space and mental stimulation. Without early socialization and control, this breed can become dangerous, especially when provoked. Their size, power, and dominant nature make them a challenge, even for experienced dog handlers.
4. Boerboel
The Boerboel is a powerful South African mastiff breed that was historically used to guard homes and farms. Adult males can weigh up to 200 pounds and are known for their muscular build and fearless demeanor. Boerboels are highly intelligent, loyal, and affectionate with their families, but they are naturally suspicious of strangers. Their protective instincts can easily turn into aggression if not properly managed.
Due to their dominance and assertive personality, they require an owner who can be firm and consistent. Boerboels need early and continuous training and socialization to ensure they do not become overly aggressive. They are not recommended for first-time dog owners or households with small children, as their strength can be overwhelming. Their territorial nature and courage make them excellent guard dogs, but without proper control, their imposing size and strength can pose a serious risk to others.
5. Great Dane
Though often referred to as “gentle giants,” Great Danes can be intimidating due to their towering height and strength. Males can stand up to 32 inches tall and weigh between 140 to 175 pounds. Despite their calm and friendly nature, their size alone can make them difficult to handle, especially for people who are not used to large dogs. If they jump, run, or pull on a leash, they can easily overpower an adult.
Great Danes are generally good with people and other animals, but they require early training to prevent them from developing bad habits. Their large size also means they require a lot of space to move around. A cramped environment or lack of exercise can lead to behavioral issues. Additionally, their short lifespan and susceptibility to health issues such as hip dysplasia and bloat make them a challenging breed to care for. While not typically aggressive, their sheer size makes it essential to train them well.
6. Saint Bernard
Saint Bernards are famous for their rescue work in the Swiss Alps and are known for being gentle and friendly. However, they are also extremely large, weighing between 140 to 180 pounds or more. Their size and strength can be a problem if not properly managed. Saint Bernards are prone to being clumsy due to their bulk, which can accidentally cause harm, especially around small children or elderly people.
Despite their good temperament, their massive size requires strong obedience training to ensure they don’t unintentionally knock people over or damage property. Additionally, they tend to drool a lot and can be messy eaters, which not everyone can handle. They also need lots of grooming due to their thick coats. Saint Bernards do best in cool climates and need plenty of room to move. Without enough training and space, this gentle giant can become a difficult companion to manage.
7. Irish Wolfhound
Irish Wolfhounds are among the tallest dog breeds, with males often standing over 32 inches tall and weighing up to 180 pounds. Originally bred for hunting wolves and elk, they are strong, fast, and courageous. Despite their intimidating size, Irish Wolfhounds are generally gentle and quiet. However, their strength and speed make them potentially dangerous in the wrong hands. These dogs require ample exercise, training, and space to roam.
Without enough physical and mental stimulation, they may develop destructive behaviors. They are not ideal for apartment living or inexperienced owners, as they can be difficult to control if not properly socialized. Their large size also puts them at risk for health problems such as heart disease and bone disorders. While their temperament is usually calm, handling such a large and powerful dog comes with responsibilities that not everyone is prepared for.
Bottom Line
Owning a large dog can be incredibly rewarding, but it’s not for everyone. The breeds listed in this blog—while loyal, intelligent, and protective—require experienced owners who can provide proper training, space, and leadership. Without these, even the friendliest of large dogs can become difficult or even dangerous.
If you’re not prepared to handle their strength, stubbornness, or specific care needs, it’s best to admire these giants from afar. Choosing the right breed means putting safety, responsibility, and compatibility first—for both the dog and the people around it.
FAQs
Are large dog breeds harder to train?
Yes, many large dog breeds are more challenging to train due to their strength and independent personalities. They often need experienced handlers and early socialization.
Can large dogs live in apartments?
Most large dogs are not suited for apartment living. They need plenty of space to move around and exercise, which small homes or apartments can’t always provide.
Are giant dog breeds more aggressive?
Not necessarily. Aggression often depends on training and environment. However, some large breeds have strong guarding instincts, which can lead to aggression if not managed.
What is the biggest issue with owning a large dog?
The biggest issue is handling their strength and size. They require more food, space, training, and medical care—making them a serious commitment for any owner.