---
title: Denver Dog Behaviorist | Expert Behavior Modification | Koru K9
description: Looking for an expert dog behaviorist in Denver, CO? Koru K9 specializes in severe aggression, anxiety, reactivity, and complex behavior rehabilitation.
---
★★★★★ 4.9 from 1,200+ client reviews
Balanced dog training since 2013 · Serving 7 states across the US
Call us: [415-583-5412](tel:4155835412)
[](https://www.koruk9.com/?hsLang=en)
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[415-583-5412](tel:4155835412) [Book a Consultation](https://www.koruk9.com/contact-us?hsLang=en)
[Home](https://www.koruk9.com/?hsLang=en)› [Locations](https://www.koruk9.com/dog-trainer-locations?hsLang=en)› [Colorado](https://www.koruk9.com/dog-trainer-locations/colorado?hsLang=en)› [Denver](https://www.koruk9.com/dog-trainer-locations/colorado/denver/dog-board-train?hsLang=en)› Dog Behaviorist
Denver · Dog Behaviorist
# Denver *Dog Behaviorist*
For dogs with big behaviors, and families who refuse give up on their dog.
[Book a Free Consultation →](https://www.koruk9.com/contact-us/?hsLang=en) [Call 415-583-5412](tel:4155835412)
**3–8 week** programs **Max 5 dogs** per trainer **2×** weekly photo & video updates
★★★★★
“Whether we’re your first call or your last hope.”
**Programs from $3,600 · GPS collars · Max 5 dogs**
What does a dog behaviorist in Denver do?
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.
Problem behaviors we help with
## Behavior we work with in Denver
If the reactivity, anxiety, fear, or aggression feels unfixable, we want you to know it’s not.
[Tell Us About Your Dog →](https://www.koruk9.com/contact-us/?hsLang=en)
### Aggression
Dog-to-dog aggression, Human aggression, Resource or food guarding, Dogs fighting
### Fear & Anxiety
Fear based behaviors, Separation anxiety, Generalized anxiety, Destructive behaviors
### Obedience Issues
Pulling on leash, Not coming when called, Jumping, Excessive barking
Our philosophy
## Let the *heeling* begin.
Ever wonder why some Denver dog Board & Train programs promise quick fixes or take a one-size-fits-all approach, only to leave you with unreliable results and behaviors that come back? That doesn’t mean your dog is broken — it means they need a different approach.
At Koru K9 Dog Training in Denver, our Board & Train programs are built for real-life success — not shortcuts. We focus on lasting behavior change through connection, consistency, and clear communication.
**Real-life training in real environments.** Each day includes structured sessions, field trips, and exposure to everyday distractions — city sidewalks, parks, and real streets, never a kennel run.
1–5
Client dogs per trainer — never more
2×
Photo & video updates weekly
GPS
Collars & secure home environments
0
Kennels — home-based, always
How it works
## How dog behaviorist works in Denver
We treat every dog as if they were our own — because we know how much they mean to you.
 1
### Pick-up day
Pick up and drop off are part of every program. Your dog travels safe and settles into their trainer’s home.
 2
### Life in a real home
Your dog lives with a professional trainer — structured sessions plus playtime, exercise, and rest, never a crowded facility.
 3
### Real-world training daily
City streets, parks, and field trips — with at least two photo/video updates per week so you follow the progress.
 4
### Delivery & go-home lesson
We personally deliver your dog back and teach you everything they’ve learned — plus two follow-up lessons.
Your local team
## Koru K9 trainers serving Denver
Local trainers who live and work where you do.
### Cyndi Wright
Denver, CO
Certified BehavioristKoru Master Program Graduate
Cyndi has worked as a dog walker and sitter for over 20 years but she discovered her passion for dog training while rehabilitating a rescue Siberian Husky.
[Read full bio →](https://www.koruk9.com/dog-trainer-locations/colorado/denver/dog-behaviorist#bio-cyndi-wright)
### Thomas Vytlacil
Denver, CO
Dog Behaviorist
I’ve been a dog advocate for more than 25 years working with organizations such as Stray Rescue out of St. Louis and adopting a variety of pups abandoned and left to wonder if they were worth loving.
[Read full bio →](https://www.koruk9.com/dog-trainer-locations/colorado/denver/dog-behaviorist#bio-thomas-vytlacil)
### Jenna Zulauf
Denver, CO
Dog Behaviorist
Jenna Zulauf is a passionate and dedicated professional dog trainer with over a decade of experience working with dogs. She furthered her education by attending Tarheel Canine School for Dog Trainers, where she graduated as a…
[Read full bio →](https://www.koruk9.com/dog-trainer-locations/colorado/denver/dog-behaviorist#bio-jenna-zulauf)
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### Cyndi Wright
Denver, CO
Certified BehavioristKoru Master Program Graduate
Cyndi has worked as a dog walker and sitter for over 20 years but she discovered her passion for dog training while rehabilitating a rescue Siberian Husky. Although she had grown up with dogs her whole life, this was her first experience with a reactive and aggressive dog. As her dog became increasingly difficult around unfamiliar dogs and people, Cyndi began to feel their world shrinking.
Determined to find more than a quick fix, she turned to Koru K9’s balanced training approach—and the transformation was life-changing for both of them. The results spoke for themselves. Friends, family, and neighbors began asking what she had done to improve her dog’s behavior, and she quickly realized how many dogs—and their people—could benefit from the same tools and structure.
What started as helping others informally became a calling. Cyndi pursued formal education in balanced dog training to confidently support dogs with even the most challenging behaviors. Today, Cyndi works as a Dog Behaviorist and Balanced Trainer, helping improve the lives of dogs while empowering their humans.
She recognizes that every dog and every family is unique, and she tailors her training plans to meet individual needs. She focuses on in-home training, working directly with clients both in their homes and in real-world environments where behaviors typically surface. When she’s not working with clients, you’ll find Cyndi hiking with her dogs or curled up on the couch with them and a good book.
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### Thomas Vytlacil
Denver, CO
Dog Behaviorist
I’ve been a dog advocate for more than 25 years working with organizations such as Stray Rescue out of St. Louis and adopting a variety of pups abandoned and left to wonder if they were worth loving. I’ve been an entrepreneur since I was 26 owning restaurants, a clothing line, and consulting for corporations.
I bring my life experience to training dogs and horses on my small farm in Black Forest Colorado. I sought to work with Koru K9 because of their philosophy around helping the core issues that keep the dog and the owner from a fulfilling relationship together.
If I’m your last resort or you want to take the steps to teach your dog valuable life skills, I will be dedicated to giving you my very best and helping you discover your dog’s true potential!
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### Jenna Zulauf
Denver, CO
Dog Behaviorist
Jenna Zulauf is a passionate and dedicated professional dog trainer with over a decade of experience working with dogs. She furthered her education by attending Tarheel Canine School for Dog Trainers, where she graduated as a certified professional pet trainer, strengthening her knowledge and expertise in professional dog training and behavior.
Jenna believes in going the extra mile—not only with her clients, but with her own dogs as well. She actively competes in PSA (Protection Sports Association), continually challenging herself and her dogs to reach higher levels of performance, teamwork, and reliability. One of her proudest accomplishments was competing at PSA Worlds 2025, with her dog, Jax.
An experience that reflects her commitment to putting in the time, dedication, and hard work required to excel in the sport. What truly sets Jenna apart is her passion for helping people build better relationships with their dogs. She understands that every dog and owner is different, and she takes pride in creating practical, individualized training that helps owners better understand, communicate with, and enjoy their dogs.
Whether working through everyday obedience, behavioral challenges, or pursuing higher-level goals, Jenna is committed to helping both dogs and their people succeed. With years of hands-on experience, professional education, competitive accomplishments, and a genuine love for what she does, Jenna brings dedication, knowledge, and enthusiasm to every dog she works with.
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More reviews
## Results from families like yours
Verified reviews from clients across every market we serve.
★★★★★
“I am SO happy we invested in Koru K9. We got matched with Natalie and Lee as our trainers and they have been INCREDIBLE.”
TL **Tasha LaRue**Verified client review
★★★★★
“Rob was professional, flexible, and had many resources he was happy to share! Thank you for your time!”
V **Vickie**Verified client review
★★★★★
“I took my 1 1/2 year old 'hyper' aussie doodle, Gigi for a 3 week board and train with Irini.”
AM **Annemarie M.**Verified client review
[Write Us a Review Today](https://www.google.com/maps?cid=16938504931794498991)
Questions
## Denver dog behaviorist FAQs
What is the difference between a traditional dog trainer and a dog behaviorist in Denver?+
A traditional dog trainer focuses primarily on teaching basic commands and obedience skills (like sit, stay, or heel). A dog behaviorist specializes in modifying complex underlying emotional states—such as deep-seated fear, severe aggression, resource guarding, trauma, and separation anxiety—to change how a dog feels and reacts in its environment.
What complex behavior problems does Koru K9’s Denver behaviorist team address?+
Koru K9's behavior modification programs target severe behavioral challenges across the Denver Metro area, including: severe dog-to-dog aggression and human-directed aggression, bite history rehabilitation and court-mandated training cases, complex resource guarding (food, furniture, items, or handlers), extreme fear-based reactivity and panic disorders, and severe separation anxiety and self-destructive habits.
Does Koru K9 offer home-based behavior rehabilitation in the Denver area?+
Yes. Koru K9 provides private in-home behavior coaching as well as immersive, home-based Board & Train programs. Dogs in Board & Train live directly inside a trainer’s private home rather than a stressful facility, allowing behaviorists to modify habits in a real-world setting.
## Other dog training programs in Denver
### In-Home Dog Training
In-Home Dog Training for Denver dogs and their families.
[Explore In-Home Dog Training →](https://www.koruk9.com/dog-trainer-locations/colorado/denver/in-home-dog-training?hsLang=en)
### Aggressive Dog Training
Aggressive Dog Training for Denver dogs and their families.
[Explore Aggressive Dog Training →](https://www.koruk9.com/dog-trainer-locations/colorado/denver/aggressive-dog-training?hsLang=en)
## Your companion is worth it. Your peace of mind depends on it.
Whether we’re your first call or your last hope, Koru K9 will meet you — and your dog — where you are, and help you build the calm, confident companion you’ve been searching for.
[Book a Free Consultation →](https://www.koruk9.com/contact-us/?hsLang=en) [415-583-5412](tel:4155835412)
[](https://www.koruk9.com/?hsLang=en)
**Koru K9 Dog Training & Rehabilitation**
455 Market St Ste 1940, PMB 999798
San Francisco, CA 94105-2448
[415-583-5412](tel:4155835412) · [woof@koruk9.com](mailto:woof@koruk9.com)
Office Hours: Monday–Friday 8am–5pm PST
#### Services
[Board & Train](https://www.koruk9.com/dog-training-services/board-train?hsLang=en) [In-Home Training](https://www.koruk9.com/dog-training-services/private-in-home-training?hsLang=en) [Hybrid Training](https://www.koruk9.com/dog-training-services/hybrid-training?hsLang=en) [Puppy Training](https://www.koruk9.com/dog-training-services/puppy-training?hsLang=en) [LunaDog AI — Online](https://www.koruk9.com/lunadogai-dog-training-app?hsLang=en)
#### Locations
[California](https://www.koruk9.com/dog-trainer-locations/california?hsLang=en) [Washington](https://www.koruk9.com/dog-trainer-locations/washington?hsLang=en) [Oregon](https://www.koruk9.com/dog-trainer-locations/oregon?hsLang=en) [Colorado](https://www.koruk9.com/dog-trainer-locations/colorado?hsLang=en) [Texas](https://www.koruk9.com/dog-trainer-locations/texas?hsLang=en) [South Carolina](https://www.koruk9.com/dog-trainer-locations/south-carolina?hsLang=en) [North Carolina](https://www.koruk9.com/dog-trainer-locations/north-carolina?hsLang=en) [All locations →](https://www.koruk9.com/dog-trainer-locations?hsLang=en)
#### Resources
[Behavior Guides](https://www.koruk9.com/guides?hsLang=en) [Blog](https://www.koruk9.com/blog?hsLang=en) [FAQs](https://www.koruk9.com/about-us/faqs?hsLang=en) [Become a Trainer](https://www.koruk9.com/become-a-trainer?hsLang=en) [Careers](https://www.koruk9.com/careers?hsLang=en) [Contact](https://www.koruk9.com/contact-us?hsLang=en)
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