Dog aggression training in North Shore, Laval, Repentigny, Terrebonne, Saint-Jérôme
Also Serving: Mascouche, Blainville, Lorraine, Rosemère, Lachenaie, L’Assomption, et les environs
✔ Grand Master Trainer
✔ Bark Busters Certified
Meet Alexandre Messier
Since 2011, I’ve transformed the lives of over 1,500 dogs and families across the Greater Montreal area. As a Grand Master Trainer and Behaviour Therapist, I’m proud to be one of Quebec’s most experienced and trusted dog trainers. Coming from a background in the media industry, I developed strong communication and teaching skills that translate perfectly into helping families understand their dogs.
After spending a decade in television, I reached a turning point and made the pivotal decision to combine my passion for teaching with my love for animals. Determined to help families build better relationships with their dogs, I became committed to transforming behaviour problems into peaceful, loving companionship. As a certified Behaviour Therapist and Trainer, I specialize in helping dog owners communicate effectively with their companions so families can enjoy the calm, connected relationships they deserve.
My mission is simple: help dog owners understand their canine companions so they can enjoy relaxed, happy dogs.
Every time I go out to see a client, I am given the opportunity to make a difference. The best part about being a dog trainer is the moment someone tells you: “You have changed my life!”
Did you know that each Bark Busters trainer & certified behaviour therapist is required to pass an aggressive dog safety program that keeps hundreds of trainers safe worldwide. All trainers are required to understand different types of dog aggression, fear and trauma, and know how to approach each situation calmly and safely. You are always in good hands with Bark Busters!
Ready to Transform Your Dog’s Life?
Take the First Step Toward a Well-Behaved Dog
Call 438-777-8248 or contact us using the form below.
Hundreds of Aggression Cases Resolved
Certified Behaviour Therapist
In-Home Training
Alexandre Specializes In
Dog Aggression Issues
Stop dangerous aggression toward people and other dogs
Separation anxiety in dogs
End destructive behaviour and constant barking
Leash Training
Eliminate pulling and reactive behaviour
Puppy Training
Start right from day one to instil good habits
Excessive Barking
Peace restored for you and your neighbours
Food Aggression
Safe feeding for multi-pet households
Jumping on People
Calm, polite greetings for guests
General Dog Obedience Training
Complete behaviour transformation
We Understand How Scary
Dog Aggression Can Be
You love your dog, but their aggression is affecting your entire family:
- You’re afraid your dog might bite a visitor, a child, or another dog
- Walks have become impossible – your dog lunges, barks, and pulls toward every dog or person
- You can’t have guests over because your dog growls, snaps, or shows teeth
- Mealtimes are tense because your dog guards food bowls, toys, or sleeping spots
- You’ve been told your dog is “too aggressive” for group classes or daycare
You’re not alone. Aggression is treatable – and we can help.
Why Our Approach Works Where Others Fail:
- In-home training addresses aggression where it actually happens
- No punishment, no physical force – this makes aggression worse
- Communication-based techniques that create lasting change
- You learn to read and redirect your dog’s triggers
- Visible improvement often in the first 2-2.5 hour session
- Lifetime Support Guarantee – you always have the help you need from Bark Busters.
Laval Families Who Overcame Dog Aggression With Alexandre
Dog Aggression Training FAQs
How much does training cost?
We offer a one-time fee that includes your initial assessment, dog training sessions, and lifetime support. Pricing depends on your specific needs. Contact us on the form above for an accurate quote.
How quickly will I see results?
Most clients see noticeable improvement during the first session. As Mabel shared, “I’ve never seen Comet so calm and well behaved” after just one session. Long term habits take consistency, don’t forget! We schedule follow up appointments to suit your dog’s needs, and help you! Your lifetime guarantee means you always have the support you need.
Do you train all breeds and ages?
What if my dog is aggressive? Is training safe?
Aggression is one of our specialties. Each Bark Busters trainer is trained on our unique “Stand Rite No Bite” system, and must pass a test to make sure they know how to safely approach aggressive situations. We use safe, effective communication techniques, and coach the humans on how to address the root cause of aggression to create lasting change.
Why in-home training instead of group classes?
What does "lifetime support" really mean?
Do I need special equipment like bark collars?
We do not use any form of shock collar during aggressive dog training. The Bark Busters Laval dog trainer will assess and advise you on what your specific dog will need. You do not need to go buy anything ahead of time.
How long are training sessions?
The initial session is typically 2-2.5 hours. This gives us time to assess your dog, teach you effective techniques, and start seeing results immediately. Follow-up sessions are typically an hour.
What areas do you serve?
Alexandre offers in-home dog aggression training in the North Shore, Laval, Repentigny, Terrebonne, Saint-Jérôme, Mascouche, Blainville, Lorraine, Rosemère, Lachenaie, L’Assomption and surrounding areas.


