Stop treating the reactivity. Start treating the fear behind it.

Why suppressing your dog's reactivity may be making things worse and what real behavior change actually looks like.

Avi Kornblum

Certified Shelter Dog Specialist · Broward & Palm Beach County

When a dog lunges at a passing car, explodes at another dog across the street, or spins and barks uncontrollably on a walk, the very first question most people ask is: how do we stop this?

That question is understandable. But it leads far too many owners and trainers down the wrong path entirely.

Because the reactivity is not the problem.

Reactivity is a message.

"Suppressing the symptom does not cure the disease. It simply forces the pressure somewhere else."

What your dog's reactivity is actually telling you

When we observe leash reactivity, the data that matters isn't just what the dog is doing — it's why.

Yes, it's important to note the intensity of the reaction, how close a trigger needs to be before the dog responds, and how frequently it happens. These are valuable data points.

But they are not the root cause. And they will never lead you to a lasting solution on their own.

Dogs become reactive for a range of reasons. In some cases, it stems from territorial instinct or heightened prey drive. But far more commonly — especially in adopted, rescue, or under-socialized dogs — the root cause is fear, insecurity, or emotional overwhelm.

A dog that barks and lunges at every passing car isn't being bad. That dog is communicating:

I am scared, and I don't know what else to do.

Why punishment-based tools can make reactive dogs worse.

E-collars, prong collars, and sharp leash corrections may suppress the visible behavior in the moment. The dog stops lunging. The owner feels relief. But the internal emotional state that created the reactivity hasn't changed at all.

Think of it like squeezing a balloon. The air doesn't disappear — it just moves somewhere else. And with enough pressure it eventually pops.

When fear-based reactivity is suppressed without addressing the cause, you often see:

• Increased anxiety and pacing at home

• Destructive behavior like chewing, scratching, spinning

• Excessive licking or other compulsive outlets

• Redirected aggression toward the owner or other pets

• Aggression without warning...

the most dangerous outcome of all.

That last point deserves special attention. When a dog is repeatedly corrected for growling or showing early warning signals, it learns to suppress those signals. The growl disappears. Many owners interpret this as progress.

It isn't. A dog that no longer growls before biting is a dog that will bite without warning. Removing the warning sign doesn't remove the fear that created it.

The right approach: behavior modification that treats the cause

Real, lasting improvement comes from changing how the dog feels about its triggers — not just suppressing how it reacts to them.

This is what behavior modification actually means: systematically helping the dog build a new, calm emotional response to the things that once triggered fear.

Through careful distance management, loose-leash work, positive reinforcement of calm observation, and consistent calm leadership from the owner, the dog's nervous system begins to learn something new.

That thing I was afraid of? It actually signals something good. I am safe. I don't need to react.

Client story · Coconut Creek, South Florida

Rosie's breakthrough: from melting down to lying down.

Rosie is a sweet adopted dog who spent most of her early life under-socialized, with little exposure to the outside world.

The moment her adopters brought her home, they fell in love but walks were a nightmare from the start.

Cars triggered explosive reactions.

People triggered reactions. Movement of almost any kind sent her into a spiral of barking, lunging, and spinning.

Other trainers had recommended corrections and aversive tools.

But the moment I met Rosie, I recognized something important: this was not aggression.

This was a scared dog trying to make the scary things go away the only way she knew how.

We took Rosie to Firefighters Park in Margate. We brought her near the busy two-lane traffic of Rock Island Road — trucks, 18-wheelers, constant movement.

When the first car passed, she did exactly what she always had done.

Instead of correcting her, we created space. We kept the leash loose. When she chose calm, we rewarded it.

We didn't battle the reaction, we quietly changed the emotional picture around it.

Within ten minutes, Rosie was walking calmly alongside moving traffic. By the end of the session, she was lying down less than ten feet from the road, relaxed, as cars and trucks rolled past her continuously.

No leash pops. No corrections. No battle.

Her owners' energy shifted too. They stopped bracing for chaos and Rosie stopped feeding off that anticipation. The loop was broken from both ends.

Rosie didn't need to be corrected out of her reactivity. She needed to be shown that the world was safe. Once she understood that, everything changed.

An analogy that says it all...

You wouldn't take cough medicine for an upset stomach. You wouldn't treat a fever with a bandage.

When we use tools like a prong or E-collar on a dog whose reactivity comes from fear, that's exactly what we're doing.

Treating the wrong thing entirely, and potentially making the real problem worse.

The right training approach has to match what is actually motivating the behavior.

For fear-based reactivity, that means compassion, patience, structure, and behavior modification that builds genuine emotional safety and not tools that punish a dog for being afraid.

If your walks have become stressful, chaotic, or emotionally exhausting for both you and your dog, know this: it doesn't have to stay that way.

Rosie is proof.

Dogs like her transform NOT when we overpower them, but when we finally give them what they were asking for all along...calm leadership, safety and a reason to trust the world around them.

Ready to change your walks?

If your dog is struggling with reactivity, or behavioral chaos, you are not dealing with a bad dog. You are dealing with a dog that hasn't felt safe yet.

As a certified shelter dog specialist and the official trainer for multiple South Florida rescues and shelters, I specialize in working with adopted dogs.

All sessions are in-home, in your dog's real environment, where the behavior actually happens.

Serving Lighthouse Point, Boca Raton, Coconut Creek, Coral Springs, Parkland, Margate, Fort Lauderdale, and all of Broward and Palm Beach County.

Free consultation. No pressure. Real answers.

(954) 900-9013 ✉️ avi@theacdt.com 🌐 www.theacdt.com

Your dog deserves walks filled with calm, confidence, and connection — not stress, fear, and chaos.

The walk should become one of the best parts of both your day and your dog’s day.

Leash reactivity Fear-based behavior 

Behavior modification Adopted dogs 

South Florida dog training 

Broward County Palm Beach County