Top 10 Most Aggressive Dog Breeds

While aggression isn't tied to specific breeds, some breeds might show it more readily if their physical and mental well-being isn't looked after, or if they miss out on proper training and early socialization. This can be because certain breeds were originally developed to guard, herd, or hunt animals. However, it's important to remember that any dog can become aggressive without the right training and socialization.

The Role of Nature vs. Nurture

How a dog is raised, trained, and socialized has an immense impact on how they behave. Responsible ownership, focused on providing proper training and socialization, is the key to preventing aggression in any dog.

1. Chihuahua

As the smallest breed in the world, these tiny dogs may not look aggressive at a glance, but this breed has been known to display multiple traits of aggression. Chihuahuas are known to be very loyal and devoted to their pet parents. On its own, this can be a beautiful trait, it can often lead to jealousy and result in actions such as barking and biting.

2. Dachshund 

Known by many names, the Weiner dog, Badger dog, Sausage dog, or Dachshund, is a short-legged, long-bodied breed known for its unique appearance. Primarily used for hunting in the past, it is not surprising that aggression can be a prominent trait. Another reason for the aggression displayed by this breed is its small size, which it tries to make up for with extra attitude. Here's an overview of the costs associated with the Dachshund.

3. Chow Chow

Of Chinese origin, the Chow Chow is a sturdy dog with a dense double coat. These dogs are known for their skills in hunting and herding, both of which require assertive and dominant personalities. Here's a fun fact: one Chow Chow even became the beloved pet of ex-US President Calvin Coolidge. For a breakdown of the costs of owning a Chow Chow visit this page.

4. Akita

A Japanese dog, the historic Akita originated in the northern mountains of Japan. Commonly used for policing and guarding, these dogs have developed a protective nature. Akita are naturally wary of strangers and other dogs and may even attack. Learn more about the cost of owning an Akita.

5. American Pitbull Terrier

American Pitbull Terriers are known for being tenacious and determined canines. These characteristics can often lead to aggressive behavior and the courage to engage in fights. However, with proper training, these dogs can be incredibly loving and affectionate pets.

6. Cane Corso

An Italian Mastiff, this breed can often be found in the role of a companion dog or a guard dog. The Cane Corso is another breed that has in the past been used for hunting because of their aggressive nature. Cane Corsos are highly unlikely to be friendly with strangers. Learn more about the costs of owning a Cane Corso.

7. Doberman Pinschers 

This large breed developed by Louis Dobermann in Germany is among the most intelligent, tenacious, and energetic of guard dogs. Often used by the Police, Doberman Pinschers can become aggressive, especially with strangers, if not trained properly. Learn more about the cost of caring for a Doberman Pinscher.

8. German Shepherds

German Shepherds are the working dogs of Germany. These dogs are used for everything from herding to disability assistance, search-and-rescue, police work, and warfare. Naturally protective of their families, these dogs need proper training and socialization to help shape them into well-behaved adult dogs. If you're interested in getting a German Shepherd, learn more about the cost of caring for one here.

9. Rottweilers

Originally from Germany, Rottweilers were primarily working dogs. Known there as Rottweiler Metzgerhund, which translates to Rottweil butchers' dogs, they were used to herd livestock and pull carts loaded with butchered meat. From loving and affectionate to aggressive protectors, these dogs are shaped by their upbringing. If you are interested in bringing a Rottweiler into your home, here is a detailed breakdown of the costs of owning a Rottweiler.

10. Siberian Husky

Siberian Huskies are known for their striking appearance and boundless energy. While generally friendly and good-natured, Huskies can exhibit aggressive tendencies if their needs for physical and mental stimulation are not met. They are highly intelligent and independent, which can sometimes be misinterpreted as stubbornness or defiance. Pet parents must commit to consistent training, early socialization, and plenty of daily exercise to prevent frustration-related behaviors such as excessive barking, digging, or even nipping. Huskies thrive in environments where they have a clear role and regular interaction with their human families.

Frequently Asked Questions

My dog is showing aggressive behavior. Can training help?

Training can make a big difference for dogs struggling with aggressive behaviors like guarding or leash reactivity. If your dog is showing these kinds of behaviors, contact a dog trainer for assistance.

Will Pet Insurance Cover Aggressive Dog Breeds?

While some insurance providers may have breed restrictions, Spot plans do not and can cover any breed.

Expert Insights From Spot:

While some dog breeds are known for being gentle companions, others may require more experienced handling. According to our internal data, the average cost of a claim for treating behavioral problems in dogs is about $275*. This highlights the importance of responsible pet ownership, including proper training and socialization, to help prevent behavioral issues in dogs. Early intervention and professional guidance can significantly improve a dog's behavior and help create a harmonious home for everyone.

Responsible Ownership: The Key to Preventing Aggression

It's essential to highlight that this list doesn't mean these breeds are inherently dangerous. With responsible ownership, proper training, and early socialization, dogs of any breed can be loving and well-adjusted companions.

To help your puppy grow up into a well-behaved adult dog, we recommend the following:

Remember: Every Dog is an Individual

Choosing a dog, regardless of breed, is a big commitment. By understanding a dog's temperament, along with the transformative power of training and socialization, you can set the foundation for a safe and rewarding relationship for you and your dog. Check out our informative video on the most aggressive dog breeds.

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Aggressive and Dangerous Dogs FAQs

Have questions about dangerous dogs? Don’t worry, we’ve got you covered.

Are Pitbulls Dangerous Dogs?

The perception of pit bulls as dangerous dogs is a contentious issue influenced by various factors including media portrayal and individual experiences. Like all breeds, a pit bull's behavior is primarily shaped by factors such as upbringing, training, socialization, and owner responsibility. While some pit bulls may display aggression, many others are affectionate and well-behaved pets. Breed-specific generalizations can perpetuate stereotypes that may not reflect the true nature of individual dogs. It's important to assess each dog based on its own behavior and not solely on its breed.

Are Belgian Malinois Aggressive?

When it comes to Belgian Malinois, it's important to clarify that this breed is not inherently aggressive. Belgian Malinois are highly intelligent, energetic, and protective dogs, often excelling in roles such as police work, search and rescue, and service tasks. Their protective nature and strong work drive can sometimes be mistaken for aggression. However, with proper training, socialization, and mental stimulation, Belgian Malinois can be gentle, loyal, and well-mannered companions. It is important to realize that people who own these pets need to put in the effort to train them effectively.

Are Bulldogs Aggressive?

Similarly, when considering Bulldogs, it's important to dispel the myth that they are naturally aggressive. Bulldogs are typically known for their calm, friendly, and patient demeanor. They were originally bred for bull-baiting, but modern Bulldogs have been selectively bred to be gentle companions. While they may exhibit stubbornness, they are generally affectionate and good-natured with family members, including children. Like any breed, a Bulldog's behavior can be influenced by its environment, training, and socialization. Proper care, positive reinforcement training, and regular social interactions from a young age can help ensure that Bulldogs remain friendly and well-adjusted pets.

Are Labradors Aggressive?

Continuing with our examination of dog breed temperaments, let's address the question of whether Labradors are aggressive. Labradors are widely recognized for their friendly, outgoing, and gentle nature. Bred originally for retrieving game during hunts, they have evolved into one of the most popular family pets due to their affectionate and sociable temperament. Labradors typically exhibit high levels of patience, making them excellent companions for children and other animals. However, as with any breed, a Labrador's behavior can be influenced by its upbringing, environment, and training.

What is the Most Dangerous Dog Breed?

The perception of which dog breed is the most dangerous varies widely and is often influenced by individual experiences and media portrayals. It's important to note that a dog's behavior is primarily shaped by its upbringing, training, and socialization rather than its breed alone. Breed-specific legislation and stereotypes about certain breeds being inherently dangerous have been widely debated. Responsible ownership, proper training, and understanding canine behavior are crucial factors in promoting safe interactions with dogs of all breeds. However, the most dangerous dog breed is commonly thought of as the pitbull.

What is the Difference Between a Protective Dog and Aggressive Dog?

At Spot Pet Insurance, we believe it's crucial to distinguish between protective and aggressive behavior in dogs, as understanding this difference can enhance both pet and owner well-being. Protective dogs are loyal and devoted to their families, often showing heightened alertness or defensive behavior when they perceive a threat to their loved ones. This behavior is typically controlled and purposeful, rooted in the instinct to guard and safeguard their human companions. On the other hand, aggressive dogs may exhibit uncontrolled and unwarranted hostility towards people or other animals, regardless of a real threat. This type of behavior can be unpredictable and dangerous, stemming from factors such as fear, anxiety, or a lack of proper socialization.

How Can You Tell a Mean Dog?

Identifying a potentially aggressive or "mean" dog involves observing its body language, behavior, and interactions with people and other animals. Signs of aggression may include:

1. Body Language: Stiff posture, raised hackles (hair along the back), and staring.

2. Facial Expressions: Bared teeth, growling, or snarling.

3. Vocalizations: Intense barking or growling.

4. Behavior: Lunging, snapping, or biting without apparent provocation.

5. Context: Aggressive behavior in situations such as resource guarding (e.g., food or toys), territoriality, or fear.