Dog Aggression Behaviourist

Specialist help for growling, snapping, biting, guarding and aggressive behaviour towards people or other dogs.

Aggression is not a diagnosis — it is behaviour with a reason behind it. I don't simply focus on stopping the growling, lunging or biting. I look at what is driving the behaviour, what is maintaining it, and what needs to change to create safer, lasting improvement.

GET HELP WITH YOUR DOG

You may be here because your dog…

growls, snaps or bites family members
reacts aggressively towards visitors
lunges or barks at other dogs
guards food, toys, furniture or a person
becomes aggressive when handled, moved or approached
suddenly seems unpredictable or “out of character”
has already bitten someone
is becoming harder to manage despite training

These behaviours can look very different on the surface, but aggression is rarely random. Fear, frustration, pain, guarding, learned behaviour, conflict, overarousal and environmental pressure can all play a role. Understanding the pattern is the first step towards changing it safely.

You do not need to know exactly what type of aggression your dog has before contacting me.

A dog with ball in the mouth is laying on the grass

How I Approach Aggressive Behaviour

Teaching a dog to sit, stay or leave something can be useful, but obedience alone does not explain why a dog is growling, snapping or biting.

Before deciding how to change the behaviour, I look at the whole picture.

I look at:

What happens before the behaviour
The situations, triggers and patterns that repeatedly lead to the reaction.

Your dog's environment and daily life
Routine, exercise, enrichment, sleep, stress, relationships and the way situations are managed can all affect behaviour.

What your dog may be feeling
Fear, frustration, conflict, overarousal, uncertainty or the need to protect something important can all influence aggressive behaviour.

Learning history and previous experiences
What your dog has learned — intentionally or unintentionally — can influence how they respond today.

What the behaviour achieves
Does growling make someone move away? Does lunging create more distance from another dog? Has the behaviour worked for your dog in the past?

Possible pain or health factors
Sudden or unusual aggression can sometimes be associated with discomfort or medical problems, in which case veterinary investigation may be important.

Only after understanding these factors do I build a behaviour modification plan designed around your individual dog.

The aim is not simply to make the warning signs disappear.

The aim is to understand what is causing them and change the conditions that make the behaviour necessary.

Has your dog already bitten someone?

A bite does not automatically mean that a dog is “bad”, dangerous in every situation, or beyond help.

But it does mean the situation needs to be taken seriously.

The first priority is safety and preventing another incident while we work out what led to the bite.

When I assess a biting incident, I look at much more than the bite itself, including:

what was happening immediately beforehand
who the dog bit and their relationship with that person
whether there were warning signals before the bite
how much pressure the dog was under
whether the dog was guarding, frightened, frustrated, in pain or trying to create distance
how severe the bite was
whether similar incidents have happened before
what has changed in the dog's environment or routine

One bite can mean very different things depending on the circumstances.

That is why I do not assess a dog simply by asking, “Has this dog bitten?”

I ask, “Why did this dog feel the need to bite in that situation, and what do we need to change to reduce the chance of it happening again?”

If your dog has bitten someone, you do not need to wait for another incident before asking for help.

MY DOG HAS BITTEN — I NEED HELP

What happens when you contact me?

You do not need to have all the answers before getting in touch.

I will first ask you about your dog, the behaviour you are seeing, when it started, what tends to trigger it and what you would like to change.

From there, I look for the patterns behind the behaviour and decide what support is most appropriate.

My approach usually includes:

1. Understanding the behaviour
I look at your dog's history, triggers, environment, routine, emotional state and previous learning.

2. Identifying what is maintaining it
We look at what happens before and after the behaviour and why it may continue to work for your dog.

3. Making the situation safer
Where necessary, I help you reduce risk and prevent the dog from repeatedly practising the unwanted behaviour.

4. Building an individual behaviour plan
You receive practical steps based on your dog and your circumstances rather than a generic training programme.

5. Adjusting as your dog progresses
Behaviour change is rarely perfectly linear. We can review what is working, identify new patterns and adapt the plan when needed.

I work with clients online as well as locally in Retford and West Midlands, so I can support complex behaviour cases regardless of where you live.

TELL ME ABOUT YOUR DOG

Why work with me?

Aggression cases need more than good intentions. They require careful assessment, realistic management and a clear understanding of behaviour.

Qualified in canine behaviour
I hold advanced qualifications in canine behaviour, psychology, communication, training and working with aggressive dogs.

Experienced with complex cases
I work with aggression, reactivity, guarding, fear, overprotectiveness, frustration and other challenging behaviours that can make everyday life difficult.

Science-based and force-free
I do not use fear, pain or intimidation to suppress behaviour. My approach focuses on understanding why the behaviour is happening and creating safer, more appropriate responses.

Individual support
There is no single programme that fits every aggressive dog. Your dog's history, environment, triggers and personality all matter, so the plan is built around your individual case.

My goal is not to make your dog simply appear more obedient.

It is to help you understand your dog, reduce risk and create meaningful behaviour change.

“Karolina was very professional and compassionate, training plan she provided for my aggressive dog worked very well.”

— Jennifer

Dog Aggression FAQs

Can an aggressive dog be helped?

In many cases, yes. The outcome depends on what is causing the aggression, how established the behaviour is, the situations in which it occurs and how consistently the environment can be managed.

The aim is not to promise that aggression will simply disappear. It is to understand the behaviour, reduce risk and help your dog develop safer ways of coping.

Why has my dog suddenly become aggressive?

Sudden changes in behaviour should always be taken seriously.

Pain, illness, fear, stress, changes in the environment or a negative experience can all affect behaviour. If aggression appears suddenly without an obvious explanation, I may recommend speaking to your vet as part of the assessment.

Should I punish my dog for growling?

No. Growling is communication.

Punishing the warning can make the dog less likely to growl in the future without changing the reason they felt uncomfortable. That can leave you with fewer warning signs before a bite.

I would rather understand what caused the growl and address that.

What if my dog has already bitten someone?

You can still contact me.

A previous bite is important information, but it does not tell us everything about the dog. I look at what happened before the bite, the circumstances, warning signals, severity and whether similar incidents have happened before.

The priority is preventing another incident while understanding what caused the behaviour.

Can you help with dog aggression online?

Yes.

Many behaviour problems can be assessed and supported very effectively online because much of the work involves understanding patterns, routines, triggers, environment and owner responses.

I work with clients worldwide online and also offer local support in Retford.

Do I need to see a vet first?

Not always, but sometimes veterinary involvement is important.

Pain and medical conditions can influence behaviour, particularly when aggression has appeared suddenly or when the dog reacts to being touched, moved or handled.

If I think a health issue may be contributing to the behaviour, I will recommend veterinary investigation.

How long does behaviour modification take?

There is no fixed timescale.

Some changes can happen quickly once the right cause is identified and the environment changes. More established behaviour may require gradual work over weeks or months.

Progress also depends on the individual dog, the behaviour and how consistently the plan can be followed.

Will you tell me my dog is dominant?

No.

Aggression is not automatically about a dog trying to become dominant or “take control”.

I look at the actual function of the behaviour — what the dog is experiencing, what triggers the reaction and what the behaviour achieves in that situation.