Serving Denver Metro and Adams County, Jefferson County, El Paso County, Boulder County, Douglas County, Arapahoe County, Larimer County, Weld County , and Broomfield County
For dogs with big behaviors, and families who refuse give up on their dog.
Reactivity. Fear. Anxiety. Aggression. It might feel unfixable—but we’ve helped thousands of dogs overcome exactly that.
Rebuild trust. Bring balance back to your home. Enjoy life with your dog again.
Your dog’s aggression, reactivity, fear or anxiety shouldn’t define your life.
You’ve tried it all. The reward systems, the group classes, the “quick fix” boot camps—and nothing has worked.
Our program is different by design: slower, deeper, and built for the real world.
We focus on more than just stopping bad behaviors. Our training creates calm, structure, and clarity for both you and your dog—building obedience, confidence, and trust through consistent routines and clear communication.
Your trainer will work with you to resolve problem behaviors while developing essential life skills—from leash walking and crate training to calm greetings and stress-free mealtimes.
At Koru K9, we specialize in real-world behavior change. Sometimes we’re the first call. More often, we’re the last.
Why our training works:
Experts in Complex Behaviors: We handle everything from reactivity and anxiety to serious aggression.
Tailored Training Plans: Built around your dog’s needs and your lifestyle.
Balanced, Relationship-First Methods: Structure, trust, and accountability go hand in hand.
Real-World Readiness: We prepare dogs for real-life success—not just commands in a classroom.
Training doesn’t end when the appointment does—and neither does your support. Every Koru K9 program includes 1–12 months of LunaDogAI (starting January 2026. Based on the program), our trainer-built digital guidance system. You’ll have access to step-by-step help, video feedback, and real-time answers during the moments when behavior actually happens at home.
It’s like having your trainer in your pocket—so progress doesn’t stall, confusion doesn’t spiral into setbacks, and your investment is protected long after the final session.
Our behavior training programs are designed to create lasting transformation at a pace that respects your dog’s learning style. We don’t rush results—we build them through clarity, consistency, and connection.
We address the real reasons dogs struggle—fear, anxiety, reactivity, aggression. And help owners build trusting relationships with their dog.
We’ve helped thousands of dogs and owners rewrite their story. Let us help you write yours.
Ever wonder why quick-turn programs don’t work? It’s because they use forced compliance, creating unreliable behaviors that often lead to regression.
Our programs are different: we build trust, clarity and real-world readiness at a pace that respects your dog’s needs.
We use a balanced, relationship-first approach that blends:
This means we:
The result is lasting behavior change rooted in connection, consistency, and communication your dog can trust and understand.
This is where better behavior begins. Fill out the form to start your dog’s transformation.
From Reactive to Reliable — See the Power of Our Board & Train Program.
We trained our 2 for babes with Will Greenway. One is an 8 year old Australian Shepherd and the other a 3 year old Rough Collie. We're expecting a baby soon...
I can’t recommend Halley A. enough! I worked with Halley many years ago before Koru and was so excited to cross paths again. Walks used to be stressful, with constant pulling and lack of focus—but no...
I am SO happy we invested in Koru K9. We got matched with Natalie and Lee as our trainers and they have been INCREDIBLE. Our Pitsky was having so many behavior issues and he came back with so many new sk...
Our dog Molly, an English springer spaniel, recently returned from a 3-week board and train with Sparky Davis and Koru K9. She is a different dog! Before she left, she pulled at the leash, charged at car...
I took my 1 1/2 year old "hyper" aussie doodle, Gigi for a 3 week board and train with Irini. She sent photos and videos of training updates during her time...
I went online to find a dog trainer for owners with aggressive dogs and came across Koru K9 and Will Greenway. I have had five sessions and a onboarding session all one hour each in Portland, Oregon. And...
From fear-based aggression to obedience struggles, we create customized training solutions for lasting change
| Aggression | Fear & Anxiety | Obedience Issues |
|---|---|---|
| Dog-to-dog aggression | Fear based behaviors | Pulling on leash |
| Human aggression | Separation anxiety | Not coming when called |
| Resource or food guarding | Generalized anxiety | Jumping |
| Dogs fighting | Destructive behaviors | Excessive barking |
Dog Board & Train Programs
Immersive training that creates clarity and consistency.
Board & Train provides daily structure and professional guidance so behaviors are shaped in a controlled, real-life setting. We don’t rush dogs or chase shortcuts—progress happens at the speed of the dog. Real-world exposure, accountability, and clear communication build a foundation you can confidently continue at home.
See if Board & Train is the right fit →
Hybrid Training Programs
The best of Board & Train + private coaching.
A blend of immersive Board & Train and private sessions. This option gives you structured training with professional handling and the guidance you need to continue progress at home. Ideal for dogs with mild to serious behavior challenges who need real-world results and owner involvement. See if Hybrid is a fit →
Private, In-Home Dog Training
Hands-on support with your trainer in your home.
Our trainer comes directly to you and works alongside your family to build clear communication and reliable obedience. Best for obedience training, leash manners, and behavior issues that need structured coaching and routine.
Book a Private Training Consultation →
Puppy Training Programs
Prevent issues before they start.
Our structured foundation program focuses on crate training, potty training, confidence building, and early obedience—so you don’t have to fix problems later. Build engagement, trust, and proper structure from the start. Start a Puppy Training Plan →
Let’s turn the chaos into calm, and get you enjoying life with your dog again.
Most people come to us thinking their dog can’t be helped.
They leave wondering why they waited so long