Aggressive & Reactive Dog Training in MA & NH
If your dog lunges, barks, growls, or has become unpredictable around dogs or people, you’re in the right place. Led by a retired police K-9 officer with 25+ years of experience turning difficult dogs into calm, reliable companions.
- Retired Police K-9 Officer
- 25+ Years of Experience
- Expert Off-Leash Trainer
- Thousands of Dogs Trained
What Counts as Aggression or Reactivity
Most owners aren’t sure what to call their dog’s behavior — and the label matters less than the plan. We work with all of it.
✓ Leash reactivity
Lunging, barking, or spinning at dogs or people on walks.
✓ Dog-to-dog aggression
At parks, fences, or between dogs inside your own home.
✓ Resource guarding
Protecting food, toys, furniture — or a favorite family member.
✓ Fear-based aggression
Growling or snapping when startled, cornered, or handled.
✓ Overarousal
Excitement that tips into nipping, mouthing, or uncontrollable behavior.
Reactive or Aggressive?
Overwhelmed — not dangerous
Barking and lunging are usually distance-seeking: “get away from me” or “I can’t handle this excitement.” Explosive, but the intent is space.
Intends to make contact
The behavior looks similar on a leash, but the goal is different — and so is the training plan.
Trained by a Retired Police K-9 Officer
Chris Parkiotis spent his career as a police K-9 handler working dogs in high-pressure, real-world environments — not sterile training rooms. That background shapes how we handle serious behavior cases.
- ✓ Calm, confident handling — no fear, no frustration, no shortcuts
- ✓ Balanced training built on structure and clarity
- ✓ Real-world proofing around dogs, people, traffic, doorways
- ✓ Owner coaching, so progress survives the trip home
From Evaluation to a Changed Dog
Free In-Person Evaluation
We meet your dog at our Salem, NH facility, see the behavior firsthand, and give you an honest read on what’s driving it.
Board & Train, 2–4 Weeks
Your dog lives with us. Daily structured training with controlled, safe exposure to triggers — the fastest way to reset rehearsed patterns. For milder reactivity, private lessons can be the right start instead.
Owner Handoff & Follow-Up
Hands-on lessons so the new behavior transfers to your household, plus follow-up support as routines return to normal.
Aggressive Dog Training FAQs
Can an aggressive dog really change?
In our experience over 25+ years, the overwhelming majority of aggressive and reactive dogs improve dramatically with structured training. The evaluation gives you an honest, case-specific answer before you commit to anything.
Is Board & Train safe for a reactive dog?
Yes. Reactive and aggressive dogs are our specialty, and exposure to other dogs is controlled, gradual, and supervised at every step. Dogs are never simply thrown together.
Do you work with dogs that have bitten someone?
We evaluate every dog individually, including dogs with a bite history. The free in-person evaluation lets us assess your dog safely and tell you honestly what training can accomplish.
How long does aggressive dog training take?
Most aggression and reactivity cases go through our 2–4 week Board & Train program, followed by owner lessons and follow-up support. Milder leash reactivity sometimes resolves through private lessons over several weeks.
What training methods do you use?
Balanced training — clear structure and boundaries paired with positive reinforcement, tailored to your dog at the evaluation. We show you exactly how everything works before we use it.
The longer a dog rehearses aggression, the more automatic it becomes.
Get an honest assessment from a trainer who has spent 25 years handling hard dogs. Free, in person, no pressure. Explore our training programs or reach out today.