Ancillary K9 Dog Training
Service area: Serves Denver, Colorado, with all private training sessions held in the Cherry Creek neighborhood. No specific radius stated, but focused on the Denver metro area.
Service Overview
Types of Dog Training
- Behavior Modification
- Working Dog
- Family Dog
Specialty Focus Areas
- Reactivity / Aggression
- Biting / Nipping
- Fearfulness
- Leash Pulling
- Recall
- Separation Anxiety
- Barking Excessively
- Jumping on People
Training Formats Offered
- Private Lessons
Program Formats
- Intensive Program
- Sessions Package
- One-Time Consultation
Types of Dogs
- Large
- Giant
- Working
- Herding
Age of Dogs Trained
- Puppy (<1 year)
- Adolescent (1-2 years)
- Adult (2-8 years)
- Senior (8+ years)
Dog Training Methodology
Methods:
- ✓ Balanced Training
- ✓ Positive Reinforcement Only
Equipment:
- ✓ Flat Collars
- ✓ Martingale Collars
- ✓ Pinch Collars
- ✓ E-Collars
- ✓ Obstacle Courses
Ancillary K9 offers private, intensive training programs tailored to each dog’s unique behavior. Programs include Obedience Training, Behavioral Training, Aggressive Dog Training, Puppy Training, Protection Dog Training, and Court-Ordered Evaluations. Sessions are conducted one-on-one in a quiet outdoor setting to ensure focus and real-world application. Training is designed for rapid behavioral change with ongoing support and lifetime retraining guarantees.
Pricing & Policies
Pricing Summary
Pricing details are not publicly listed. Clients are encouraged to schedule a free consultation to discuss program costs and customized packages based on individual dog needs.
Policies
Backed by a Lifetime Training Assurance: if a dog regresses in behavior, free retraining is provided. No cancellation or rescheduling policies are explicitly stated, but flexibility and prompt communication are emphasized in client testimonials.
Testimonials
“Dion is an expert in his field. He provides detailed guidance, ideas, and instructions at each training specifically tailored to your dogs needs and behavior. He’s great to work with and cares about his clients. My Aussie shepherd was an unpredictable dog before meeting and training with Dion. With Dion’s training we have come up with solutions to make me feel comfortable taking him into public, go camping, and be around my 4 month old baby. Highly recommend! Thank you Dion and team.”
– Client
“After much internet sleuthing for a dog trainer who would provide lasting results, I kept circling back to Dion’s website… 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.”
– Client
“We were originally unsure if we wanted to do professional dog training due to cost, but after reading reviews on Dion we decided to give it a try and it’s worth every penny. Within the first lesson Dion got our dog to stop pulling on the leash and has taught us a handful of commands and skills to make our day to day life with our dog much easier.”
– Client
About the Trainer
Ancillary K9 Dog Training is a Denver-based dog training business specializing in private, intensive training programs for dogs with behavioral challenges including aggression, reactivity, fear, anxiety, and obedience issues. Their certified trainers deliver rapid, lasting results through personalized, one-on-one sessions held outdoors in the Cherry Creek neighborhood. They do not use board-and-train services, ensuring owners remain actively involved in their dog’s progress. Their programs are backed by a Lifetime Training Assurance, offering free retraining if a dog regresses. They serve dogs of all ages and breeds, with particular expertise in large and working breeds like German Shepherds, Rottweilers, and Belgian Malinois. They also offer court-ordered evaluations and protection dog training. Their methods integrate professional tools with balanced techniques combining positive reinforcement and corrections.
They are consistently ranked as a top dog training company in Colorado, featured in local media including 5280 Magazine and Denver A-List, and have over 190 authentic five-star reviews. All training is conducted privately, with 24/7 support available to clients.
They provide free consultations to help dog owners determine the right program for their dog’s needs.
Accomplishments
Consistently named a Top Dog Training company in Colorado. Featured in 5280 Magazine, Thirst Colorado Magazine, Denver A-List, and Urban Life Wash Park. Over 190 authentic five-star client reviews. Trainers hold multiple certifications and specialize in high-profile and complex cases including aggression and court-ordered evaluations.
How to Get Started!
Begin with a free consultation to discuss your dog’s specific behavior issues and determine the appropriate training program. Consultations are offered without obligation and lead to a customized training plan.

Contact Information
Availability
- Weekdays
- Weekends
- Morning
- Afternoon
- Evening
Hours
Monday: 9am-8pm
Tuesday: 9am-8pm
Wednesday: 9am-8pm
Thursday: 9am-8pm
Friday: 9am-8pm
Saturday: 10am-8pm
Sunday: 10am-8pm
Certifications
- Credentialed
Associations
- Accredited
Languages
- English
Other Services Offered
- Pet trainer
Location
3773 Cherry Creek N Dr East Tower, Ste 801, Ofc 816, Denver, CO 80209Listing Tools for Trainers
For Ancillary K9 Dog Training Only
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