Is My Dog Reactive? Signs, Misdiagnoses & What To Do Next
- canineconnectionst1
- May 5
- 6 min read
Updated: May 6
If your dog barks, lunges or reacts on walks, you’ve probably asked yourself:
“Are they aggressive?”
“Do they just want to play?”
“Why does this only happen on the lead?”
The truth is, many of these behaviours are misunderstood. What looks like aggression or excitement is often something else entirely - reactivity.
In this guide, we will break down what dog reactivity really is, the signs to look for and what to do if you think your dog might be struggling. If you’re based in Teesside, Middlesbrough or North Yorkshire, this is something we help owners with every day.
What Is Dog Reactivity? (In Simple Terms)
Dog reactivity is an overreaction to something in the environment.
This could be:
Other dogs
People
Bikes, cars or sudden movements
Instead of staying calm, or neutral, your dog may:
Bark
Lunge
Growl
Fixate
Reactivity isn't about your dog behaving "badly" - it's usually driven by:
Fear
Frustration
Over-stimulation
What does reactivity look like in real life?
Reactivity can show up in different ways, but common signs include:
Barking and lunging on walks
Pulling intensely towards or away from triggers
Freezing or fixating on another dog or person
Spinning, whining or becoming hyper-alert
Behaving differently on vs off the lead
Even mild signs can develop into much bigger problems if left unaddressed.
Common misdiagnoses (what most owners get wrong)
This is where most people struggle - because reactivity doesn’t always fit into one box or look how you expect it to.
"My dog is just friendly"
Often frustration. They want to get to the other dog but can't.
"My dog is aggressive"
In many cases, it's actually fear-based reactivity.
"My dog is protecting me"
Usually insecurity or anxiety - not protection. This can be highly unpredictable.
"They're just badly behaved"
Most reactive dogs are overwhelmed, not disobedient.
Reactivity vs Aggression (And can it escalate?)
Reactivity and Aggression are not the same - but they can overlap.
Reactivity = emotional overreaction
Aggression = intent to cause harm
However, un-managed reactivity can escalate over time, especially if:
The dog feels trapped or pressured
Warnings (like barking or actively trying to flee from the trigger) are ignored
The root cause isn't addressed
This is why early, correct training is so important.
common triggers for Reactive Dogs
Every dog is different, but common triggers may include:
Other dogs (especially while on the lead)
People (strangers, children, men, etc.)
Fast movements (bikes, runners, etc.)
Noises or busy environments
Identifying your dog's triggers is the first step toward improving their behaviour.
Important note - In rare cases a "reactive dog" who is behaving differently to how they usually behave may have underlying health issues. Please contact your vet if you believe your dog's behaviour has changed dramatically recently.
why misdiagnosis matters
if you misunderstand the behaviour, it's easy to take the wrong approach.
This can lead to:
Increased stress for your dog
Escalating reactions
Frustration for you as the owner
For example
Forcing your dog to "face their fears" can make things worse.
Punishing the reaction is never the right choice - this does not address the root cause and punishes your dog for something that they physically and emotionally cannot help and do not understand.
The key is understanding why your dog is reacting - not just trying to stop it.
Contacting a Professional Dog Trainer & / or Behaviourist can help you to diagnose these behaviours and create a plan for you and your dog to work together to overcome these issues.
how reactivity affects owners (and daily life)
Living with a reactive dog can be exhausting.
Many owners:
Avoid walks or go out at quiet times
Feel embarrassed, judged or guilty
Struggle to relax when out with their dog
We have even seen some owners and their dogs hide behind cars / trees to avoid a specific trigger when out on a walk!
If this sounds familiar, you are not alone - and it's something that we see and work with every day. This can be improved with the right support from a Professional Dog Trainer & Behaviourist.
what not to do with a reactive dog
Some common mistakes can unintentionally make reactivity worse:
Forcing interactions with dogs or people / specific triggers
Punishing barking or lunging
Walking too close to triggers
Dramatically avoiding triggers
These approaches often increase anxiety rather than reduce it.
how to help a reactive dog
Improving reactivity isn't about quick fixes - it's about the right approach.
This usually involves:
Managing distance from triggers
Building engagement, focus and confidence
Gradual, controlled exposure
Consistency over time
This is exactly the type of work we focus on in both our Reactivity Bootcamp and One-to-One Programmes.
When to seek professional help
It's worth getting help if:
Your dog's reactions are getting worse
You feel anxious or unsure handling your dog
Reactivity is happening in the home as well as outside
You're not seeing progress on your own
The earlier you address reactivity, the easier it is to improve.
how we help reactive dogs in teesside, middlesbrough & North Yorkshire
Our Reactivity Bootcamp is designed for dogs who react on walks.
Small groups (max 4 dogs)
Controlled, structured environment
Safe exposure to real-life triggers
Progressive real-world training from a secured field to walking around a local village at the end of the Bootcamp
One session every 5 weeks, giving you full support and increased consistency
For more complex or severe cases, we offer tailored one-to-one support.
Ideal for intense reactivity
Suitable for behaviour in the home
Fully personalised training plans
preventing reactivity in puppies
While not all reactivity can be prevented, early training helps massively:
Controlled, positive exposure
Avoiding overwhelming situations
Teaching calm, neutral behaviour
Socialising with other puppies and dogs on and off the lead
Puppy Classes which focus on socialisation and neutrality are perfect for this as you are guided by a professional and surrounded by opportunities for your puppy to grow and learn!
If you're unsure whether your dog is reactive - or you've been struggling to manage their behaviour - the best place to start is with a professional consultation.
The sooner you understand what is really going on, the sooner you can start making progress!
frequently asked questions
Is my dog reactive or aggressive?
Many dogs that appear aggressive are actually reactive. The difference comes down to intent and emotional state.
Can reactive dogs be trained?
Yes - with the right approach, most reactive dogs can improve significantly.
Why does my dog bark at other dogs on walks?
This is often due to frustration or fear, especially when on the lead.
Why is my dog only reactive on the lead?
This is extremely common and is usually down to frustration or feeling restricted.
When your dog is on the lead, they can’t move freely to create distance or approach in a natural way. This can lead to:
Frustration (wanting to get to another dog but can’t)
Anxiety (feeling trapped with no escape)
This often results in barking, lunging or pulling - despite the dog being completely fine off the lead.
Will my dog grow out of reactivity or aggression?
In most cases, no. Without training, it often gets much worse over time.
Should I avoid other dogs entirely?
Not entirely—but management is important.
Avoiding situations where your dog becomes overwhelmed is helpful in the short term.
However, long-term progress comes from controlled, positive exposure, not complete avoidance.
The goal isn’t to avoid dogs forever—it’s to teach your dog how to cope around them calmly.
Can reactivity be cured, or will my dog always be reactive?
Reactivity isn’t usually something that is “cured” overnight—but it can be significantly improved.
With the right training:
Reactions can reduce dramatically
Your dog can learn to stay calm around triggers
Walks can become enjoyable again
Some dogs may always have sensitivities, but they can absolutely learn to manage them.
How long does it take to help a reactive dog?
It depends on the dog, but most owners start seeing changes within a few weeks of consistent training.
Factors that affect progress:
The severity of the reactivity
How long it’s been happening
Consistency of training
Long-term improvement takes time—but progress can happen quicker than many expect with the right approach.
Is it my fault my dog is reactive?
In most cases, no.
Reactivity can be influenced by:
Genetics
Early experiences
Lack of exposure or the wrong type of exposure
What matters most now isn’t how it started—but what you do next to help your dog.
Why does my dog lunge at other dogs on walks?
Lunging is usually an escalation of emotion.
It can be caused by:
Frustration (wanting to get closer)
Fear (trying to create distance)
Over-arousal
The behaviour may look similar, but the underlying reason matters, as it determines the right training approach.
Author Details
Written by Joe, qualified Dog Behaviourist & Trainer at Canine Connections Teesside, helping owners across Teesside build calmer, more confident dogs.
