Understanding Reactivity in Dogs: 

What It Is and What It Means for You

If you’re the proud parent of a reactive dog, you already know the world can sometimes feel a little overwhelming, for both you and your dog. Maybe walks are full of unexpected lunges, barks, or growls. Or perhaps your dog struggles in busy places or around certain sights and sounds. You’re not alone, and neither is your dog. Reactivity is more common than you might think, and with understanding and the right tools, life with your dog can feel calmer and more connected.

What Is Reactivity in Dogs?

Reactivity is a term used to describe a dog’s heightened emotional response to something  near them in their environment. This could be another dog, a person, a bicycle, or even a loud noise. Reactive dogs don’t just notice these triggers, they react strongly to them, often barking, lunging, or trying to escape.

It’s important to note that reactivity isn’t just about dominance or disobedience. It’s often a sign of stress, fear, frustration, or excitement. Think of it as your pup’s way of communicating that something feels too big or overwhelming for them.

A barking dog with a brown and white coat against a blurred outdoor background.

Common Triggers for Reactive Dogs

Every dog is unique, but some of the most common triggers for reactivity include:

A bustling street filled with diverse people walking in sunlight.
  • Other Dogs - Some dogs may feel overly excited, territorial, or fearful when they see other dogs.
  • People – Strangers, children, or people wearing hats, uniforms, or carrying objects can trigger a reactive response.
  • Loud Noises – Thunderstorms, fireworks, and sudden traffic sounds can be overwhelming.
  • Moving Objects – Scooters, bicycles, or cars can set off a dog's prey or chase drive.
  • New Environments – Crowded parks, busy paths, or even a trip to the vet can trigger a reaction in dogs unfamiliar with such stimuli.

It’s helpful to observe and note your dog’s specific triggers. Identifying them is the first step toward managing reactivity.

Reactivity vs. Aggression

One of the biggest misunderstandings about reactive dogs is the assumption that they are aggressive. While reactive behaviour can sometimes look like aggression, the two are not the same.

Aggression is intentional behaviour with the goal of doing harm, such as biting or growling with intent to intimidate. Reactivity, on the other hand, is more about being overwhelmed. A reactive dog may bark or growl because they feel scared or unsure, not because they want to hurt anyone. Recognising the difference ensures your dog gets the support they need, without unfair labels.

A barking reactive dog on a lead, looking aggressive with bared teeth.

How to Support Your Reactive Dog

Living with a reactive dog might feel challenging at times, but there’s a lot you can do to help them (and yourself) find more calm and confidence. Here are some tips to get started:

1. Practice Empathy and Patience

Reactivity often stems from underlying emotions like fear or frustration. Your dog isn’t trying to be difficult, they’re trying to cope with challenges in their own way. A little patience and understanding go a long way. Take deep breaths, stay calm, and remind yourself that progress takes time.

2. Understand Your Dog’s Triggers

Keep track of what sets your dog off. Is it other dogs, loud noises, or certain places? Knowing their triggers allows you to manage situations better and avoid overwhelming scenarios. For example, if your dog reacts to other dogs, take them on walks during quieter times or choose routes with less traffic.

3. Create Distance

When faced with a trigger, distance is your best friend. The closer your dog is to their trigger, the harder it is for them to stay calm. If possible, move farther away, cross the street, or turn and head in another direction.

4. Use Positive Reinforcement

Reward your dog for calm behaviour. Treats, praise, or a favourite toy can reinforce positive reactions, like looking at you instead of barking at a trigger. Over time, your dog will start associating those once scary moments with good things.

5. Work on Counterconditioning and Desensitisation

These techniques help your dog build positive associations and gradually tolerate their triggers. For example, if your dog is afraid of bikes:

  • Start by showing them a bike from a safe distance while rewarding them with treats.
  • Slowly decrease the distance over multiple sessions, always ensuring your dog stays calm and comfortable.

6. Consider Professional Help

A certified dog trainer or behaviourist experienced in reactivity can provide tailored advice and hands on support. Their expertise can make a huge difference in helping you and your dog manage reactivity effectively.

7. Invest in the Right Tools

The right gear can make a big impact. For example, a no-pull harness or a long training lead can give you more control and set your pup up for success. Calming aids, like RANDO's upcoming calming jacket or natural supplements, might also help reduce anxiety.

8. Celebrate the Wins

Every small step forward counts! Maybe your dog stayed calm near another dog for an extra ten seconds today. Maybe they took a treat when they’d normally bark. Celebrate those victories, they’re signs of progress and proof that your hard work is paying off.

Building a Better Understanding

Living with a reactive dog is a unique and often emotional experience, but it also comes with deep rewards. These dogs teach us the value of patience, the power of empathy, and the beauty of celebrating small wins. Most importantly, they remind us that love and understanding can overcome even the biggest challenges.

Smiling woman holding a happy dog in her arms, both looking relaxed and content.

At RANDO, we believe in the strength of community and the importance of shared support. You’re not alone on this journey and neither is your pup. Together, we can help reactive dogs feel safer, happier, and more connected to the world around them.

Have a reactivity success story or tip of your own? We’d love to hear from you in the comments! Don’t forget to explore the RANDO Club for more resources, tools, and a community that gets it. 🐾

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