Private Training for Dog Anxiety and Behavior Problems in Denver

Is your dog fearful, anxious, unable to settle, destructive, or overwhelmed by everyday situations?

Our private, owner-involved Anxiety & Behavior program provides a personalized plan to improve confidence, calm, and day-to-day predictability. We show you what to do, how to practice, and how progress will be measured.

This program is delivered through private dog training in Denver, giving you a clear plan for your dog’s behavior and the owner coaching needed to apply it at home.

Dog standing on hind legs with front paws on a kitchen countertop, next to a cabinet with wine bottles, and a cat in the background.

Is This the Right Program for Your Dog?

This program may be appropriate for dogs struggling with:

  • General nervousness or anxiety

  • Fear of unfamiliar people, places, objects, or environments

  • Noise sensitivity

  • Difficulty settling or relaxing

  • Overarousal and poor emotional regulation

  • Stress-related barking or destructive behavior

  • Handling sensitivity

  • Adjustment difficulties following adoption, moving, or household changes

  • Avoidance, shutdown, or lack of confidence

  • Separation-related anxiety

If your dog is barking, lunging, growling, snapping, biting, or creating safety concerns, our reactive or aggressive dog training program may be the better fit. If the main issue is leash manners, recall, jumping, or everyday reliability, start with our obedience and manners training program.

What We Work Toward

Through our Behavioral Training Program, your dog will develop the skills and confidence needed to thrive in any environment. Our personalized approach ensures that each lesson is tailored to your dog's unique needs, making it a fast and effective solution for lasting behavioral improvement. Here’s what your dog will learn:

  • Stress Reduction: Techniques to remain calm in stressful situations, how to cope with new environments and unfamiliar people.

  • Anxiety Management & Confidence Building: Strategies to reduce general anxiety and build confidence. Coping mechanisms for dealing with changes in routine or environment.

  • Energy Management: Channeling hyperactivity into positive behaviors. Learning to settle down and relax when needed.

  • An Improved Bond: Improve trust and reliance between you and your dog for a more peaceful household.

Behavior & Anxiety Experts

These cases are evaluated and coached with the experience of a Denver dog behaviorist, not a one-size-fits-all obedience template. We are highly trained, specialized, and experienced in addressing all kinds of dog behavior issues. Our intensive training is designed to deliver impressive results, fast.

We train your dog, but we also give you the confidence and skills to maintain your dog’s training for a lifetime. We’ve helped hundreds of families across Colorado get the family dog of their dreams. We know how stressful a dog with anxiety or behavior issues can be for a home and family. Don’t deal with it alone or give up on your dog before giving us a call!

What people say about our ANXIETY AND BEHAVIOR Dog Training Program

Red quotation marks on a black background.

“I am so happy with Ancillary K9

He speaks in a way to get his point across with humor and common sense. He put me at ease from the start. I went at the training thinking not much more could be done for my female (one and a half year old Catahoula leopard dog). I am her third rescue as she is quite the handful. I know now why she was let go. She can jump a six foot chain link fence and run through the neighborhood like it's hers. She barks aggressively at other dogs, cats, birds, squirrels, thinks she's queen. After five sessions she has calmed down enough. I can hardly believe she was that wild girl a few months earlier. Simple commands that she would not do she now does automatically. It has been a short while with Dion and my girl has changed so much as I am so happy with Ancillary K9 I would highly recommend them to anyone.”


Terry, Denver Colorado

Two large red quotation marks on a white background.

“Dion is an incredible dog trainer!

The quality of our lives improved dramatically as a result of his teachings; and the outcomes? Simply Amazing!!! I moved to Denver from San Francisco to reunite with my ex-wife and inherited her two dogs. Their poor behavior was so disruptive that I questioned whether I could actually reconcile our relationship. My ex-wife tried several dogs trainers with no noticeable results. Feeling  hopeless; she just gave up. I was so desperate to help, I began to search for high quality dog trainers. After careful consideration I chose Ancillary K9, reading all the rave reviews gave me a sense that this was likely a good choice. I soon realized, that this was a GREAT choice with “jaw-dropping” results! By the end of 6 weeks they were blowing our minds!  Dion, has Mastered his craft, with skill and expertise. He helped me connect with these wonderful animals….AND let’s face it….Dion saved our marriage!”

Charles, Denver Colorado

You can read more success stories from Denver dog training clients who came to Ancillary K9 for serious behavior, anxiety, reactivity, and obedience problems.

Man sitting on a couch with a brown and black dog, smiling at the camera, with a forest-themed painting in the background.

Why Choose Ancillary K9

  • Intensive, Hands-On Training
    Focused private training designed to create meaningful, lasting change for both you and your dog.

  • Lifetime Training Assurance
    Should your dog ever regress from our program, we will retrain them free of charge.

  • Hundreds of Happy Customers & Five Star Reviews
    Read our success stories from Denver dog training clients.

  • Personalized, Private Training Programs
    Private dog training in Denver is the best way to create lasting behavior change because the plan is built around your dog, your home life, and your handling skills.

  • The Highest Standards in Dog Training
    We have over a decade of experience with difficult dogs.

  • We train your dog, but we also train you!
    We give you the confidence and skills to take what we learn in training and apply it in the real world.

A small child in winter clothing holding a leash, walking a pug on a sidewalk.

How we can help

We specialize in addressing a wide range of common behavior problems in dogs to help you enjoy a better relationship with your pet. Here are just some of the common issues we can help with:

  • Stress & Nervousness: Dogs may show signs of stress and nervousness through pacing, panting, or hiding, often due to unfamiliar environments or situations.

  • Anxiety: General anxiety can manifest as restlessness, trembling, or destructive behavior, usually triggered by changes in routine or environment.

  • Separation Anxiety: Dogs with separation anxiety exhibit distress when left alone, leading to behaviors like excessive barking, howling, or destructive actions.

  • Excessive Barking: Persistent barking can be a sign of boredom, anxiety, or a need for attention, disrupting the household and neighbors.

  • Chewing and Destructive Behavior: Redirecting your dog’s chewing to appropriate toys and preventing damage to your home and belongings.

  • Fearfulness and Phobias: Helping dogs overcome fears and build confidence through gradual exposure and positive reinforcement.

If barking, overarousal, or fear has escalated into lunging, snapping, biting, or public safety concerns, review our reactivity and aggression training program.

Request A Training Consultation

1. Submit the Form

Tell us about your dog, the concerns you are experiencing, and what you would like to improve.

2. Speak Briefly With Our Team

A team member will call you to confirm your information, answer basic scheduling questions, and arrange a private in-person consultation with Dion.

3. Meet With Dion and Your Dog

During the consultation, Dion will review your dog’s history, discuss your goals, observe your dog, and determine which training program is most appropriate. He will also explain the training format, scheduling, owner involvement, and total investment before you decide whether to enroll.

Tell Us About YOU AND Your Dog