Why Does My Dog Lunge and Bark? Understand and Fix Dog Reactivity
What looks like aggression is almost always fear or frustration. A neuroscience-based look at what drives leash reactivity — and the force-free path to a calmer dog.
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Featured Articles
Six new science-based articles from Dr. Pepe Hernandez — drawing on behavioral neuroscience and force-free training to help dogs feel calmer, safer, and more confident. Featured across DogsBestLife, Animal Wellness Magazine, and more.
PhD, Behavioral Neuroscience
CPDT-KA Certified
100% Force-Free
Featured in 6 publications
Practical, science-based guidance
Six new articles from PJH Dog Training
Drawing on behavioral neuroscience and force-free dog training, Dr. Pepe Hernandez explores why dogs do what they do — from reactivity and grooming stress to travel anxiety, confidence, and the link between nutrition and behavior. We’re highlighting each one over the coming weeks; follow along for guidance that helps dogs feel calmer, safer, and more confident.
Featured in DogsBestLife
Featured in Muddy Paws Grooming
Why Dogs Get Stressed During Grooming — and How to Help Them
Grooming asks a lot of a dog’s body and trust. Why the bath, dryer, and handling trigger stress — and how to build cooperative, low-fear grooming.
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Featured in PadsPass
The Dog Brain Under Stress: The Neuroscience of Travel Anxiety
Car rides and new places light up the stress response. What travel anxiety does inside the canine brain — and how to help your dog settle.
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Featured in Power Goldens
Positive Reinforcement: Not Just for Commands, but to Build Confidence
Reward-based training does more than teach cues — it changes how a dog feels. The science of how positive reinforcement builds real, lasting confidence.
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Featured in Artisan Raw Go!
Beyond the Bowl, Part 1: The Training Secret in the Bowl
What’s in the bowl shapes what happens in the brain. The link between nutrition, learning, and the everyday behavior you see on walks and at home.
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Featured in Animal Wellness Magazine
A Reactive Dog Isn’t a Bad Dog: What Their Behavior Really Means
A reactive dog isn’t a bad dog — it’s a scared or overwhelmed one. Reframing reactivity with compassion, and the science behind what your dog is really telling you.
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Dr. Hernandez’s work, featured across the dog world
These six articles have been featured by publications spanning behavior, grooming, travel, nutrition, breed communities, and canine wellness.
DogsBestLife
Muddy Paws Grooming
PadsPass
Power Goldens
Artisan Raw Go!
Animal Wellness Magazine
About the author
Dr. Pepe Hernandez, PhD · CPDT-KA
Pepe pairs a PhD in behavioral neuroscience with hands-on, CPDT-KA certified training — translating the science of how dogs learn and feel into practical, force-free help for real NYC dogs and their people.
Put the science to work
Programs behind the articles
Loved a piece? These are the programs where the same science-based, force-free approach helps dogs directly.
Reactivity
Reactive Dog Training NYC
For the barking and lunging behind the reactivity articles. View page → AggressionAggressive Dog Training NYC
Safe, force-free help for growling, snapping, guarding, and bites. View page → AnxietySeparation Anxiety Training
For dogs who panic when left alone — gradual, force-free desensitization. View page → Behavior hubDog Behavior Training NYC
Our full behavior-modification program in one place. View page → All programsDog Training Programs NYC
Every class and program PJH offers across the city. View page → AboutAbout Pepe Hernandez
The science and certification behind the method. View page →Want This Approach for Your Dog?
The same science behind these articles is what we bring to every session. Start with a consultation and we’ll build a calm, confident plan for your dog.