Meet Pepe J. Hernandez
Force-free dog behavior work grounded in science — delivered by a trainer who understands the nervous system, not just commands. Based in New York City, specializing in the reactive and fear-based behavior that makes everyday walks stressful.
The trainer behind PJH Dog Training
Pepe J. Hernandez is the founder of PJH Dog Training and a CPDT-KA certified professional dog trainer with a Ph.D. in behavioral neuroscience. His path into training is a little unusual — he came to it through the science first. Studying how the mammalian nervous system processes fear, threat, and learning, he kept arriving at the same conclusion: the behaviors we label “bad” in dogs are almost always the nervous system doing exactly what it evolved to do.
That perspective shapes everything about how he works. Based in New York City, Pepe specializes in reactive and fear-based behavior — the lunging, barking, and shutting down that turn ordinary walks into something to dread — using force-free, science-based methods. He works in the real environments where dogs actually struggle: apartment lobbies, elevators, crowded sidewalks, and neighborhood parks, rather than a controlled facility built to make training easy.
Above all, he’s committed to translating the science into plain language and practical steps you can actually follow — because the best behavior plan is the one you can carry out on an ordinary Tuesday-morning walk.
Certified, tested, and committed to ongoing education
In an unregulated field where anyone can call themselves an expert, credentials matter. Pepe holds the gold-standard certification in professional dog training and brings advanced neuroscience training to every session.
CPDT-KA
Certified Professional Dog Trainer – Knowledge Assessed. Earned by passing a rigorous, standardized examination covering learning theory, behavior modification, and humane training standards.
Learn more: What is CPDT-KA?
Ph.D., Behavioral Neuroscience
Advanced study in how the nervous system processes threat, anxiety, and learning. Understanding the neurobiology of reactivity informs every intervention — behavior doesn’t happen in a vacuum.
Active learning commitment
CPDT-KA renewal requires ongoing continuing education credits. Pepe stays current with the latest science in force-free behavior modification and canine cognition.
LIMA & Humane Hierarchy
Training follows the Least Intrusive, Minimally Aversive (LIMA) framework and the Humane Hierarchy — structured ethical protocols that prioritize the dog’s welfare.
Why Pepe treats behavior, not just obedience
A reactive dog isn’t choosing to lunge or bark. They’re running a defensive response that has — at some point — successfully created distance and relief. Surface obedience doesn’t change that, which is why Pepe starts somewhere else.
His approach starts with understanding the nervous system. Reactivity is a symptom of an overloaded arousal system, not a personality flaw. Effective training lowers the baseline arousal threshold and shifts what triggers predict to your dog’s brain.
Classical counter-conditioning changes the emotional valence of triggers. The dog who used to lunge at other dogs gradually learns that other dogs predict good things — not threat. Because that’s genuine neurological change rather than suppression, the improvement tends to be lasting rather than a temporary mask.
The science is solid. The commitment is consistent. And the results are measured by what actually happens on your walks.
What sets Pepe apart
The difference isn’t abstract — it’s concrete, consistent, and visible in how your dog moves through the world.
- Trains in your actual environment. Sessions happen in your building, on your block, and at the parks where your dog’s behavior actually happens — not a facility designed to make training easy.
- Science-backed methods. Everything is grounded in current behavior science and the LIMA framework — force-free, always.
- Realistic expectations. Reactivity is managed rather than “cured.” Progress is meaningful, durable, and measured on real walks — not by what a trainer promises.
- Trains both ends of the leash. Your mechanics, timing, and consistency are coached alongside your dog’s behavior, because your dog reads all of it.
- Accessible expertise. Advanced degrees mean little if they’re not translated into clear communication and protocols you can actually follow.
What dog owners say about working with Pepe
Work with Pepe
Every dog’s journey starts the same way — with a consultation to assess your dog’s specific situation, map the triggers at play, and lay out an honest, realistic roadmap. From there, Pepe builds a plan around your dog and your neighborhood. See the full range of programs and how sessions work on the training services page, or view pricing.
Ready to start?
Book a consultation to assess your dog’s behavior, map the triggers, and chart a realistic path forward.
Pepe J. Hernandez is CPDT-KA certified and holds a Ph.D. in behavioral neuroscience. Learn more about CPDT-KA certification, his specialty in reactive dog training, or explore training services and pricing.