The truth about French Bulldogs: are they really aggressive?

2 french bulldogs

French Bulldogs, or "Frenchies" as they are affectionately known, have become increasingly popular as pets in recent years. But with their short snouts and stocky build, some people are concerned about their potential for aggression.

In this article, we'll explore the truth about French Bulldogs and whether or not they are really aggressive.

To get a French Bulldog insurance quote for your Frenchie you can get a quote through our website.

Understanding French Bulldogs

Before we dive into the question of aggression, it's important to understand a bit about French Bulldogs.

These dogs are a small, sturdy breed that originated in France in the 1800s. They are known for their distinctive "bat ears," which stand upright on their head, and their affectionate and playful personalities.

Frenchies are generally low-maintenance dogs that are easy to care for and don't require a lot of exercise compared to larger dog breeds (typically up to an hour each day because of their smaller size.

Other dog breeds such as Alsatians and Labrador Retrievers typically need more exercise to maintain a healthy weight and quality of life).

9 signs that your French Bulldog may be aggressive

French Bulldogs are known for their affectionate and playful nature, but like any other breed of dog, they have the potential to display aggressive behaviour.

As a responsible pet owner, it is important to be aware of the signs that your French Bulldog may be displaying aggressive behaviour.

Here are nine signs to look out for:

  1. Growling or snarling - This is a clear sign that your French Bulldog is feeling uncomfortable or threatened.
  2. Biting or nipping - This is a more severe form of aggression that should not be ignored.
  3. Lunging - A French Bulldog that is lunging towards someone or something is displaying aggressive behaviour.
  4. Raised hackles - This is when the fur on your French Bulldog's back stands up, indicating that they are feeling threatened or scared.
  5. Stiff body language - If your French Bulldog is standing stiffly, with their tail raised and ears back, they may be feeling aggressive.
  6. Showing teeth - Baring their teeth is a clear sign of aggressive behaviour.
  7. Overprotectiveness - French Bulldogs that become overly protective of their owners or territory may become aggressive towards strangers.
  8. Fearfulness - Fear can cause aggression in French Bulldogs, especially if they feel cornered or trapped.
  9. Excessive barking - If your French Bulldog is barking excessively, it could be a sign of aggressive behaviour and one of the more obvious signs that you may have an anxious or aggressive dog on your hands.

Common misconceptions about French Bulldogs and aggression

One common misconception about French Bulldogs is that they are inherently aggressive dogs.

This is simply not true. Like any breed, a French Bulldog can exhibit aggressive behaviour if they feel threatened or anxious, but it is not a characteristic that is specific to the breed. In fact, French Bulldogs are known for their friendly and sociable personalities.

They are often described as "clowns" due to their goofy and playful behaviour.

Another misconception is that French Bulldogs are prone to biting. While any dog can bite under certain circumstances, Frenchies are not known for being particularly aggressive, contrary to popular belief about the dog breed as a whole.

In fact, they are generally considered to be a good choice for families with children because of their gentle nature.

Factors that can contribute to aggression in French Bulldogs

While French Bulldogs are not inherently aggressive, there are certain factors that can contribute to aggressive behaviour in any dog. These include:

Lack of socialisation

Frenchies are social animals and need to be exposed to a variety of people, animals, and environments from a young age in order to develop good social skills. Dogs that are not well-socialised may become fearful or aggressive in new situations.


Dogs that are afraid may exhibit aggressive behaviour as a means of self-defence. It's important to help your French Bulldog feel safe and secure in their environment.

Medical issues/health problems

Certain medical conditions, such as thyroid problems or neurological disorders, can contribute to aggression in dogs.

If your Frenchie is exhibiting aggressive behaviour, it's important to rule out any underlying medical issues.

Especially around other dogs, an injury may be a sign of weakness. If your dog is typically anxious, having an injury or underlying health condition may cause your pooch to be more defensive than usual.

Male dogs & female dogs

Male dogs who have not been neutered may be more likely to display aggressive behaviour compared to female dogs or neutered males.

However, training sessions, impulse control training, and discouraging bad behaviour can set dog owners up for a greater chance of success when it comes to taming an un-neutered dog.

Rescue dog

Most dogs require some form of training, especially when they've entered a new home for the first time.

Rescue dogs are no different, but they may come with some additional habits or previous trauma that may need to be worked on. Contrary to the popular saying 'you can't teach an old dog new tricks', an adult dog can be trained.

Ideally this would be done with the help of an animal behaviourist/dog trainer.

Other dogs in the home

If your Frenchie is new to the family and hasn't interacted with other dogs before, this might be a big transition and a lot for your new family member to take in.

Just like with us humans, dogs can get anxious in news surroundings.

Other dogs or pets in the household may cause an initial bout of anxiety and cause some unwanted dog aggression within the first few weeks of being introduced.

Make sure to introduce your Frenchie into the family slowly (a few minutes at a time) and make sure he/she has his/her own space to feel more comfortable and relaxed in.

Separation anxiety

Separation anxiety is exactly what it sounds like, an anxious feeling driven by being separated from an owner or other dogs.

French Bulldogs, like many dog breeds, are social animals and their desire to be around another dog or two or their trusted owner is quite profound.

Separating your Frenchie from his/her friends or from their owner can cause anxiety to build up, especially if they're not used to being alone.

This anxiety can build up into fear which may lead into general 'bad behaviour' or aggression towards other pets or... well anyone or thing that is seen to pose a threat.

To get a French Bulldog insurance quote through our lifetime or time-limited plans here at Purely Pets, you can get a quote through our website.

Are French Bulldogs aggressive with cats?

cat licking bulldog

One concern that many people have when considering a French Bulldog is whether or not they will get along with cats.

The answer, as with any dog breed, is that it depends on the individual dog.

Some Frenchies may be more tolerant of cats than others.

However, with proper socialisation and training, it is possible for a French Bulldog and cats to coexist peacefully.

If you have a cat in your home and are considering getting a Frenchie, it's important to introduce them slowly and carefully.

Keep your French Bulldog on a leash during the initial introduction and supervise their interactions.

Reward good behaviour with treats and praise as a form of positive reinforcement.

Are French Bulldogs aggressive to humans?

Another concern that many people have is whether or not French Bulldogs are aggressive towards humans.

Again, the answer is that it depends on the individual dog.

Frenchies are generally friendly and affectionate towards people, but like any dog, they can become aggressive under certain circumstances.

To prevent aggression towards humans, it's important to socialise your French Bulldogs from a young age and to teach them appropriate behaviour around people.

It's also important to never leave your Frenchie unsupervised with children, as even the most well-behaved dog can become agitated or fearful in certain situations.

What is rage syndrome in French Bulldogs?

Rage syndrome in a French Bulldog is a neurological disorder that affects certain breeds of dogs, including French Bulldogs.

This disorder causes sudden and unprovoked episodes of aggression, which can be extremely dangerous for both the dog and their owners.

The exact cause of rage syndrome in French Bulldogs is not yet fully understood, but it is believed to be a genetic condition that is passed down from one generation to the next.

Symptoms of rage syndrome in French Bulldogs can include:

  • Sudden and unexplained aggression
  • Growling or snarling
  • Biting or snapping
  • And even attacking their owners or other people or animals.

These episodes can be triggered by seemingly harmless or insignificant events, such as a change in the dog's environment or routine.

If you suspect that your French Bulldog may be suffering from rage syndrome, it is important to seek professional help from a veterinarian or animal behaviourist.

They can provide a proper diagnosis, and offer advice and treatment options to help manage the condition and prevent further episodes of aggression.

How to prevent aggression in French Bulldogs to humans, cats and other dogs

While there is no way to guarantee that your French Bulldog will never exhibit aggressive behaviour, there are steps you can take to minimise the risk.

These include:


As mentioned earlier, socialisation is key to preventing aggression in dogs. Expose your French Bulldog to a variety of people, animals, and environments from a young age.


Basic obedience training can help your French Bulldog learn appropriate behaviour around people and other animals. Training sessions can give you a clear guideline as to how you can implement daily routines and commands to build up a better relationship with your Frenchie.

Positive reinforcement training

Reward good behaviour with treats and praise. This will help your Frenchie learn what is expected of them and will reinforce positive behaviour. 

Professional training can help to speed up the process of teaching your dog to obey commands, however, initiating a reward system when your dog displays good behaviour is a great way to start building up trust.

Medical care

Make sure your French Bulldog receives regular veterinary care to address any underlying medical issues that could contribute to aggression.

For more helpful tips, information on dog breeds, and more, visit our pet advice page by clicking here.

Training and socialisation for French Bulldogs

Training and socialisation are key for any aggressive dog.

Obedience training can help your Frenchie learn appropriate behaviour around people and other animals.

Socialisation can help your Frenchie feel comfortable in a variety of situations and prevent fear-based aggression.

If you are not experienced with dog training, it may be a good idea to enrol your Frenchie in obedience classes or work with a professional trainer.

This can help ensure that your Frenchie receives the proper training and socialisation they need to become a well-behaved pet and curb your dog's aggressive behaviour.

Other considerations when owning a French Bulldog

While French Bulldogs are generally healthy dogs, they do have some health issues that potential owners should be aware of.

These include respiratory issues due to their short snouts, skin allergies, and hip dysplasia.

It's important to research these issues and to work with a reputable breeder to ensure that you are getting a healthy dog.

Another consideration is the cost of owning a French Bulldog. These dogs can be expensive to purchase, and they also require regular veterinary care, food, and other supplies.

It's important to factor in these costs when considering adding a Frenchie to your family.

Conclusion - Are French Bulldogs aggressive?

frenchie looking up

In conclusion, French Bulldogs are not inherently aggressive dogs.

Like any breed, they can exhibit aggressive behaviour under certain circumstances, but with proper training and socialisation, this can be minimised.

If you are considering adding a Frenchie to your family, it's important to do your research and to work with a reputable breeder.

With the right care and attention, a French Bulldog can make a wonderful and affectionate pet.

To get a French Bulldog insurance quote for your furry friend you can get a quote through our website.

If you would like to talk to one of our dog insurance specialists, you can get in touch with us on 0330 102 5748.

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