About Ancillary K9 Dog Training

Ancillary K9 Dog Training is Denver's premier dog training solution, offering goal-specific programs based on scientific, evidence-based research. The team believes that there are no "problem dogs," just ones who haven't been properly trained. With their diverse background and experience, they are confident in making a difference in a dog's behavior and improving the quality of life for both dogs and their owners. Clients have seen significant improvements in their dogs' behavior after working with Ancillary K9. Dogs with behavioral issues, such as reactivity and aggression, have made tremendous progress, becoming more confident and relaxed in their daily lives. The trainers, including Dion, are knowledgeable and caring, taking the time to educate owners on the "why" behind their methods. They are patient and understanding, offering support even after the training course is completed. The training programs are tailored to each dog's specific needs, and owners have reported seeing a significant reduction in problem behaviors. The trainers use a combination of methods, including aversive techniques, to help dogs understand boundaries and expectations. While some owners may be initially hesitant about these methods, they have seen the positive impact on their dog's overall life. Overall, Ancillary K9 Dog Training has received high praise from clients, who appreciate the team's expertise, patience, and dedication to helping dogs and their owners live better lives.

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Reviews for Ancillary K9 Dog Training

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  • Jan 2026

    Thanks to Dion my dog can now live a happy life and I can enjoy alongside him. Whether I need to go grab food or hike a trail, I can now trust my dog to listen and behave. Dion has an almost magical ability to read my dog’s needs and he offers exactly the right solution to have it corrected. I cannot thank him enough for all the joy that I now get to experience with my dog.

  • Nov 2025

    What can I say about Dion other than he’s fantastic and helped me and my pup tremendously! I rescued Rue about a year ago. She was super skittish, terrible on a leash, scared of any loud noises, men, bikes, thunder, the list goes on. And had an extremely high prey drive. My main goal was to reduce her overall anxiety and selfishly wanted to improve her recall so she could be off leash when we explore. Dion has helped with all that and more. I can confidently leave her off leash even with a squirrel nearby. she walks nicely by my side when we’re out. She seems way less anxious and just overall a more happy pup. Dion also taught me the skills to be a more confident and strong leader. Dion definitely knows what he’s doing and can’t recommend his services more. It’s been such a pleasure working with him!

  • Oct 2025

    After much internet sleuthing for a dog trainer who would provide lasting results, I kept circling back to Dion’s website. Multiple peers recommended board-and-train programs, but I ultimately preferred to be involved in my dog’s training. This strengthened our relationship and has made maintaining what we both learned during our sessions straightforward. Although Dion specializes in reactive and “problematic” dogs, his training methods are equally applicable to dogs who struggle with the basics. My dog, Reicher, fell into the latter category. When we first started, he had absolutely no leash manners or recall. I dreaded walks with him, because he would incessantly drag me along. Pre-training, Reicher was also quite fond of darting out of the house and refusing to come back. This caused many stressful situations for both me and others. I avoided taking him with me out of fear that he would run away and be hit by a car before I could get him back. Fast forward about a year since we completed our sessions, and I have a completely different dog. Reicher gets compliments on his manners both on and off-leash. Using the e-collar has made it possible to supplement his reliable recall with off-leash adventures when appropriate. One of my fears about training was whether it would impact his friendly and goofy personality. Instead, it has allowed both of us to have clear communication regarding expectations, and he now has much more freedom. As a trainer, Dion is clear about the outcomes to expect from his program and empowers you and your dog with personalized advice to achieve success. He stands by his lifetime guarantee and responds promptly to any issues or questions that arise, both during and after training.

Hours

Monday: 9AM - 8PM
Tuesday: 9AM - 8PM
Wednesday: 9AM - 8PM
Thursday: 9AM - 8PM
Friday: 9AM - 8PM
Saturday: 10AM - 8PM
Sunday: 10AM - 8PM

Tips

accessible parking near entrance ada-compliant main entrance ada-compliant restroom offers military discount open to all

Location

720 S Colorado Blvd Ph N Ste 1357, Denver

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