At what age Rottweiler become aggressive: It is incorrect to believe that Rottweilers are naturally aggressive dogs; however, they have earned a reputation for aggression because they are large, powerful, and confident animals who will go to any length to protect their owners and belongings.

Aggressive signs in Rottweilers typically appear when the dog reaches puberty (between 6 and 9 months of age) or social maturity (between 18 and 36 months, depending on how quickly your Rottweiler dog matures).

At what age Rottweiler become aggressive

Short answer: Rottweilers become protective around the age of two years.

Rottweilers, like all dogs, protect only what they consider to be theirs. It’s a behavior shared by most mammals. Animals will not defend anything that is not theirs or a part of their pack or territory.

To be protective, your dog must believe that you and your home are part of his territory.

Your Rottweiler will need some time to bond with you before coming to this realization. Before taking any action, he must like and trust you, as well as feel at ease in your home.

Extensive care and attention are your best weapons for ensuring your dog’s trust and love.

We can’t predict when your Rottweiler will become protective because no two dogs are alike and because dogs are individuals.

However, we can confidently state that most Rottweilers begin to be seriously protective of their owners around the age of two.

That is an average based on the experiences of many Rottweiler owners. It varies from one dog to the next. At 6 months, your puppy may begin barking at strangers. It’s perfectly fine.

You should also keep in mind that it will not happen overnight. It will take time and will occur gradually. Over time, your Rottie will gain confidence. Puppies, like young children, require time to develop confidence in their abilities.

If you adopted your Rottie as a puppy, 24 months with you is more than enough time for him to recognize you as his human and your home as his new home.

However, if you got your dog as an adult, things might be different. You’ll need to hire a trainer if it hasn’t already been trained for protection.

Once your dog understands this, you can expect him to start doing everything he can to protect you. Barking at suspicious strangers is the bare minimum that a dog will do. Most Rottweilers will bark at strangers before they reach the age of two.

Of course, training is required for the best protection. Your dog’s instincts are insufficient.

All guarding dogs, regardless of breed, require training to maximize their protective abilities. There is a reason why dog training is expensive. It’s extremely potent.


Don't let Rottweilers' bad reputation deter you from adopting one! They are amazing dogs with a lot to offer. They do, however, necessitate the patience of a seasoned dog owner. Aggression is a very real possibility that you may have to deal with. The key is to learn how to recognize signs of aggression. Attend some training sessions! Your Rottie will benefit greatly from some discipline!

When do Rottweilers begin guarding? 

Guarding is the same as protecting. In order for your dog to protect your property, he must believe it is his. Don’t expect any dog to guard what isn’t his.

Rottweilers are dominant breeds. They enjoy having control over and protecting their territory.

The two-year contract also applies here. It will take some time for the dog to realize your property is now his. It is not going to happen overnight.

If you have a large property to protect and guard against intruders, your dog’s instinct alone will not suffice. To ensure that the dog protects your property as a professional, you will need to invest in a training program.

Investing in your dog’s guarding abilities is completely worthwhile. It will eventually pay off.

How Can I Make My Rottweiler More Protective?

You can read about various methods on the internet, but the ultimate way to make your dog protective of you and your property is to pay attention to it and care for it.

As previously stated, dogs defend what they consider to be theirs. Rottweilers are no different.

How Can I Make My Rottweiler More Protective?

Caring for your Rottie and paying attention to him will show him that you are now a member of his family. That you are the pack’s leader, and he should do everything in his power to protect and please you.

In return, he will try to protect you instinctively. If your dog doesn’t love and trust you, don’t expect him to protect you.

Take good care of your Rottweiler and spend a lot of time with him. He will repay you with protection and unfailing love. That is how the brains of dogs work.

Signs Your Rottweiler Is Becoming Aggressive 

If your Rottweiler has been well-trained from a young age and is well-socialized with other dogs, it is unlikely that they will become aggressive overnight without warning.

Signs Your Rottweiler Is Becoming Aggressive

Hormones, on the other hand, can wreck havoc on any adolescent, and your dog is no exception! So, there are some signs to look for in your Rottweiler’s behavior that may indicate that an aggressive temperament is developing.

Among these indicators are:

Growling at a low pitch
Exposing the teeth
Strangers are being barked at.

It is critical that you, as the owner, do not allow these behaviors to continue. If a Rottweiler is allowed to develop an aggressive personality, it is much more difficult to reverse later on. What is critical is that these behaviors be stopped before they worsen.

At the same time, balance out the punishment for bad behavior with the reward for good. Reward your Rottweiler with a treat and lots of praise when he or she obeys a command and listens to you. Dogs enjoy making their owners happy, and your Rottweiler will realize that positive reinforcement yields a much better result.

Why Are Some Rottweilers More Aggressive Than Others? 

Some people want an aggressive dog, and Rottweilers are a real force to be reckoned with, especially when it comes to protecting a home or business. They are such large, powerful animals that a burglar or attacker would think twice about choosing a property guarded by a Rottweiler.

It’s important to remember that, while some dogs are predisposed to protective, seemingly aggressive instincts, so much depends on their training and socialization.

Why Are Some Rottweilers More Aggressive Than Others?

Aggressive Rottweilers used as guard dogs are frequently deliberately trained to react possessively and jealously to people entering their space or attempting to touch their property.

Not only that, but Rottweilers have a reputation for being aggressive due to the damage they can cause if they choose to show that aggression. A raged Rottweiler will only need one bite to inflict life-changing damage, whereas a raged Yorkshire Terrier will inflict far less.

There is no reason to assume that your Rottweiler will grow up to be an aggressive dog, but the only way to ensure that these behaviors are checked and controlled is to train and socialize your dog from a young age.

Does the personality of a Rottweiler change as they grow? 

Rottweiler puppies are as playful and loving as any other breed, but once they reach adolescence, their behavior can shift from playful to protective.

Does the personality of a Rottweiler change as they grow?

This is completely normal and part of their instinctual makeup. Rottweilers were bred to be working dogs, herding cattle and sheep and guarding the farms and land of their owners. A Rottweiler’s instinctive need to protect is strong.

It means that if this instinct is not properly channeled, it can get out of hand and lead to overly protective behaviors that are much more difficult to undo once the dog is fully matured.

All dogs grow out of their puppy personalities, but a Rottweiler that has been properly trained and socialized will be a strong, protective ally to the family rather than a dangerous, difficult-to-control aggressor.

Reasons for Rottweiler Aggressive Behavior 

When They Are Fearful Of Danger. 

Fear is the most common cause of aggression in Rottweilers. This is one of their defense mechanisms in the event of a perceived threat.

Fearful aggression does not always indicate the presence of a genuine threat. It could be the result of a misunderstanding of a specific situation. For example, suppose you’re running towards your Rottweiler with no intention of injuring him.

Reasons for Rottweiler Aggressive Behavior

Your dog can react to your action in two ways:

First, he can react positively by smiling, running up to you, and licking your face directly.

Second, the dog may react negatively because he perceives your approach as a threat. He might believe you’re going to pounce on him or stab him, which could elicit a negative reaction.

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When It Comes To Security. 

If your Rottweiler dog was extremely aggressive because he needed to protect himself from harm and danger, the dog will become protective and will try to protect his valuable possessions.

Rottweilers have a tendency to care for their puppies until they are old enough to support themselves. In this case, a female Rottweiler who has just given birth to her puppies will want to protect them as they grow.

After giving birth, some Rottweiler become hostile, even towards their guardian, due to protective aggression.

Aggression in social situations. 

This phenomenon is most common within the family and is commonly referred to as sibling rivalry. You may be wondering how can sibling rivalry between dogs occur. Sibling rivalry occurs when a dog perceives a change in the family hierarchy, despite the fact that dogs are generally incapable of harboring envy.

Rottweilers typically use this principle to meet their basic needs, such as food and water. Whoever is at the top of the hierarchy gets to choose the food, and whoever is at the bottom gets to choose last.

A change in this hierarchy is considered a threat. A Rottweiler who wants to protect his/her position in the hierarchy will try to assert himself aggressively.

Other causes of Rottweiler social aggression include:

Awakening the dog while it is sleeping

It is being deprived of food. 

Bathing the dog (Rottweilers are frequently hydrophobic, or fearful of water)

Threatening them with a sharp object

Pulling its tail aggressively.

When they are harmed. 

Pain is one of the most common causes of aggression. When a dog is hit and the stimulus causes pain, it will typically growl, pull back its lips, bark, gnash its teeth, and stiffen its tail. This is also one of the primary motivators for biting.

When Rottweilers are hit, they have a tendency to bite in order to exact their vengeance.


Rottweilers have the ability to attack people who intrude on his territory. This includes things like your bed, food bowl, and garden.

When They Are Possessive.

This behavior, similar to territorial aggression, causes a Rottweiler to attack other people or animals who steal his belongings.

When They’ve Been Punished.

This is usually the result of owners mistreating their Rottweiler s. They will become more aggressive and obnoxious towards their owners if you yell at them or hurt them frequently when they do something wrong.

While out hunting. 

All dogs, including Rottweilers, have an instinctive desire to hunt prey. That is why they chase, bark at, or attack joggers, cats, cars, and other moving objects.

When Should You Start Training Your Rottweiler? 

Any puppy’s training begins the moment you bring it home. All puppies should be started on a training program right away, beginning with showing them the proper way to go to the toilet and progressing to simple commands like sit and stay.

A Rottweiler requires more supervision than other dogs because it will quickly mature into a powerful animal whose strength must be checked by an owner who takes charge and knows what they’re doing.

Because they are so powerful and confident, Rottweilers can quickly become unruly and difficult to control. They have a naturally dominant personality, which, if unchecked, can lead to them believing they are in charge.

The training of a dog should involve the entire family, but it should not be left to the younger members to set the rules. Instead, an older member of the family should take the lead, as the dog will naturally seek out and follow a pack leader.

If there is no pack leader, the Rottweiler will quickly strive to be dominant, which will cause problems. No dog should be the family’s boss; instead, it should quickly learn its place in the hierarchy.

Socialization is part of training. 

If a Rottweiler is confined to the house, it will be confused if it meets another dog or person, and will immediately go into an aggressive, protective mode.

That is why it is critical to socialize your puppy with other dogs from an early age. They will learn social behaviors, take cues from other animals, and realize that new friends of any kind are interesting but not terrifying.

Often, a dog that appears to be aggressive is simply scared, and the barking, growling, and biting is done out of fear. If your dog is properly socialized with others, these behaviors may never develop.

Maintain Consistency and Recognize When to Seek Assistance 

Getting a dog is always a big decision, but getting a Rottweiler requires even more thought. They require a lot of attention as well as firm and consistent training because this large and powerful dog has the potential to take over very quickly.

If you discover that you are unable to handle the training on your own, reach out to those who can assist you. There is no shame in admitting that you require additional assistance from someone with more experience and who will assist you with your Rottweiler training.

Rottweilers, like children, require consistent, firm, and loving training. All three will result in a healthy, well-trained dog that is protective but not aggressive.

Consider neutering or spaying your Rottweiler. 

If you do not intend to breed from your Rottweiler, you should have them spayed or neutered once they reach puberty. This means that males should be neutered around the age of six months, and females should be neutered after one season.

You should not be concerned that neutering your pet will alter its personality. Rather than changing their temperament, neutering will simply help to reduce your pet’s natural dominant traits, such as marking, guarding, and other territorial behavior.

Spaying females is also known to reduce the risk of uterine and mammary cancers, so you’ll not only have a less aggressive Rottweiler, but also a healthier one.


What if your Rottweiler was terribly aggressive?

If your Rottweiler dog was terribly aggressive because he needed to protect himself from harm and danger, the dog will protectively aggressive and will try to protect his valuable belongings.

What Causes Fearful Aggression in Rottweiler?

Most of the time aggression in Rottweiler caused by fear.

What if he sees you?

Second: The dog may react negatively and perceive that you are running towards him as a threat.

What can a Rottweiler do?

Rottweilers can attack people who invade the spaces that he claims as his own.

What Causes Dog Bite?

Perhaps the most common cause of aggression is pain.

What is biting?

Usually, when Rottweiler sare hit, they have this tendency to take revenge, which is achieved by biting.

How Does Sibling Rivalry Happen?

Although dogs are generally not capable of harboring envy, sibling rivalry occurs when a dog perceives a change in the family hierarchy.

What is the hierarchy of Rottweilers?

Whoever is at the top of the hierarchy can choose the food they want and whoever sits at the bottom chooses last.

What Causes Social Aggression in Rottweilers?

Other causes of social aggression in Rottweiler include: Waking the dog while it sleeps depriving it of food Bathing the dog (Rottweilers are often hydrophobic or afraid of water) • Threatening them with a pointed object • Aggressively pulling its tail.

What is resource guarding?

This is known as resource guarding, and usually relates to your dog feeling that his personal belongings are being threatened and so he tries to protect them.

What are the signs of Rottweiler aggression?

Warning signs of Rottweiler aggression include: snarling growling snapping, and biting.

What is a Rottweiler’s reaction to someone suspicious?

You might also be interested in our related article on the best chew toys for Rottweilers Rottweilers are protective, so if they feel threatened or they believe a family member is in danger, you can expect that your Rottie will pace, whine or bark.

What Happens If My Rottweiler Gets Aggressive?

If your Rottweiler shows signs of aggression it is imperative that you take immediate action to stop that behavior.

What advice would you give to a Rottie owner?

This short helpful video is from dog trainer, Larry Krohn, who is a Rottweiler owner himself and one of the most common problems he has encountered from his clients is how to address their Rottweiler puppy from nipping and biting.

What Are The Best Online Video Based Training Courses For Dogs?

Brain Training For Dogs was developed by a former Karen Pryor Academy graduate and uses 21 brain training activities.

What are the benefits of Brain Training For Dogs?

This is an excellent course for bored dogs that get destructive.

What Happens If You Are Vulnerable to Rottweiler aggression?

(behavior that is not acceptable) your Rottweiler could turn on you.

Why Do Rottweilers Attack People?

Another situation of Rottweiler aggression against family members usually occurs when you do not treat your dog with proper care and handling.

What are the benefits of Rottweiler training?

This way you will have a much healthier and of course happier dog.

How do I train a Rottweiler not to be aggressive?

To train a Rottweiler not to be aggressive, it’s important that you redirect your Rottweiler’s attention in a calm manner whenever it starts showing signs of aggression, like growling, staring, snapping, or showing its teeth.

What is the best Rottweiler training?

Instead, slowly and calmly expose your dog to the things that trigger its aggression, which will make it less fearful and aggressive over time.

What is your dog training business?

Ty Brown is a Dog Behaviorist and Trainer and the Owner of Ty the Dog Guy, a business that provides dog training through digital resources (podcasts, web series, and online courses) along with in-person dog training.

What is a Rottweiler?

The Rottweiler is an ancient breed of dog from southern Germany used to herd cattle and guard resources.

What are the Rottweiler Breeds?

X Research source They are loyal, intelligent and affectionate dogs that are found throughout the world.


  • At 2 months old, this is most likely to be play biting. (


  • Rottweiler Training Complete Rottweiler Training Guide Need help with Rottweiler puppy training, virtually 100% responsiveness in obedience training, dog aggression, or protection training?
  • They rank in the top 10 for obedience according to Stanley Coren (professor in canine psychology at the University of British Columbia).
  • Not all Rottweilers are a threat, but the breed has been called “America’s deadliest dog,” having been involved in 33 deaths from 1991-1998 (according to the American Veterinary Medical Association).
  • According to one study with 372 dogs, 77% were aggressive (not all biters).
  • 20% of those were dominant (Peter Borchelt).
At what age Rottweiler become aggressive