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Your dog fully obedient
Tell us what's happening day-to-day. We'll tell you if this program fits
SERVING DENVER AND SURROUNDING AREAS
Ancillary K9 works with dog owners throughout the Denver area including:
Aurora
Lakewood
Littleton
Denver
Centennial
Call Now To Speak Directly With a Trainer
START WITH A TRAINING CONSULTATION
Schedule Your FREE In-Person Consultation, NOW!
IS YOUR DOG'S BEHAVIOR BECOMING DIFFICULT TO MANAGE?
Dogs improve with clear structure and consistent practice.
Our programs are built on:
Training that works outside the training session
Real-world exposure
This isn't quick fix obedience. This is behavior transformation.
Owner education for long-term success
Clear expectations from day one
Speak with a trainer about your dog and the right next step.
If you are unsure whether your location is covered, simply get in touch.
Stop aggressive reactions toward people and dogs
Reliable obedience around distractions
Clear guidance so you know exactly what to do
Real behavior change - not temporary fixes
Lunging or barking at other dogs
Pulling constantly on leash
Reactivity toward dogs or people
Anxiety or fearful behavior
Ignoring commands outside
Small behavior issues can quickly turn into serious problems without the right training approach.
Common situations we help with include:
Ancillary K9
Speak With a Trainer About Your Dog’s Behavior.
Discuss your dog’s behavior challenges and learn whether this training is the right fit.
A trainer will contact you to discuss your dog’s behavior and training options.
Your information is private and will never be shared.
Your information is private and will never be shared.
A trainer will contact you to discuss your dog and options.
Speak With a Trainer About Your Dog’s Behavior.
Discuss your dog’s behaviour challenges and learn whether this training is the right fit.
Behavior problems rarely improve on their own.
Your dog fully obedient
Tell us what's happening day-to-day. We'll tell you if this program fits
This training may be a good fit if
Why This Program Works
Structured in-home environment
Your dog’s behavior has become difficult to manage
You want professional guidance from an experienced trainer
Owners are trained to maintain results
Real-world behavior focus
Consistent expectations
One-on-one training
You want to understand how to maintain your dog’s training long-term
You want behavior that works in everyday life, not just training sessions
This training may not be the right fit if
Why This Program Works
Structured in-home environment
You expect behavior change without owner involvement
Owners are trained to maintain results
Real-world behavior focus
Consistent expectations
One-on-one training
You are not willing to apply the guidance provided
You are only looking for the cheapest training option
IS THIS TRAINING THE RIGHT FIT?
Many owners contact us when their dog’s behavior begins to affect everyday life. What may have started as small issues can gradually become difficult to control.
Successful training requires participation from both the dog and the owner.
HOW TRAINING WORKS
Training begins by understanding what is driving your dog’s behavior and creating a plan that addresses those root causes.
BEHAVIOR PROBLEMS THIS TRAINING HELPS ADDRESS
Why This Program Works
Training commonly focuses on behavior challenges such as:
Each dog receives a training plan based on their behavior, temperament, and your goals.
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Poor recall outdoors
Lack of obedience around distractions
WHY THIS TRAINING PRODUCES RESULTS
Many training programs fall short because training is inconsistent. Lasting behavior change requires consistency, structure, and clear communication.
By addressing the underlying behavior - not just teaching commands - lasting improvement becomes possible.
MEET YOUR DENVER DOG TRAINER
WHAT DENVER DOG OWNERS ARE SAYING
Dog owners across Denver contact Ancillary K9 after struggling with behavior issues that haven’t improved with other training methods.
Most clients report noticeable improvements in behavior, responsiveness, and overall control in the early stages of training.
THE TRAINING ENVIROMENT
Training takes place in environments that allow dogs to practice behavior in real-world situations. This ensures that behavior learned during training continues outside of the training session.
Training environments may include:
Structured home environments
Controlled exposure to distractions
Public walking areas
Real-world obedience situations
This helps dogs build behavior that remains reliable in everyday life.
TRAINING PROGRAMS
Ancillary K9 offers multiple training options depending on the behavior challenges and the owner’s goals.
Programs may include:
Training programs are recommended after consultation so the most appropriate plan can be developed.
Behavior modification training
Obedience and impulse control training
Reactivity and aggression training
Recall and leash training
★★★★★
4.9 Rating from Denver Dog Owners
Or request a call-back using the form below
Common Concerns Before Enrolling
FREQUENTLY ASKED QUESTIONS
1
MEETING & CONSULATATION
2
CREATE A TRAINING PLAN
3
START SEEING RESULTS
We’ll start meeting one-on-one to work on your goals and take you through your unique training program. We’ll build the confidence and skills not only of your dog, but of you as the owner. As you put in the work, you can expect to see results quickly.
Dion Studinski is the owner and head trainer of Ancillary K9.
He is a highly experienced, top-rated dog trainer with extensive experience working with dogs displaying reactivity, anxiety, and complex behavior challenges across the Denver area.
Rather than focusing only on obedience commands, Dion’s training approach focuses on understanding canine behavior and correcting the root causes of unwanted behavior.
By combining practical training methods with canine psychology, he helps owners develop calmer, more responsive dogs that are easier to live with.
Many clients contact Ancillary K9 after struggling with behavior problems for months or even years. Training focuses on helping owners regain control while building a healthier relationship with their dog.
Dion Studinski - Professional dog trainer
Real world training environments.
IS YOUR DOG'S BEHAVIOR BECOMING DIFFICULT TO MANAGE?
Without the right training, behavior issues escalate.
BEHAVIOR PROBLEMS WE HELP ADDRESS
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Aggression toward dogs or people
Leash reactivity
Severe leash pulling
Poor recall outdoors
Ignoring commands
Anxiety or fearful behaviour
MEET YOUR DENVER DOG TRAINER
Dion Studinski is the owner and head trainer of Ancillary K9.
WHAT DENVER DOG OWNERS ARE SAYING
Dog owners across the Denver area trust Ancillary K9 to help resolve behavior challenges.
Many clients contact Dion after trying other training methods without success.
Owners frequently report noticeable improvements in their dog’s behavior and responsiveness after training.
WHY THIS TRAINING WORKS
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Clear leadership and communication
Structured training environment
Real-world distractions
Teaching owners how to maintain results
RESULTS MANY OWNERS EXPERIENCE
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Calm walks without pulling
Reliable obedience outdoors
Less stress at home
Better behaviour around dogs
Clear communication with your dog
TRAINING PROGRAMS
Programs are tailored based on your dog's behavior and your goals.
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Behavior modification
Obedience and impulse control
Reactivity and aggression training
Programs are recommended after consultation
THE TRAINING ENVIROMENT
FREQUENTLY ASKED QUESTIONS
SERVING DENVER AND SURROUNDING AREAS
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Denver
Lakewood
Littleton
Aurora
Centennial
Start With A Training Consultation
Speak with a trainer today.
HOW TRAINING WORKS
Training begins by identifying what's driving your dog's behavior.
Stop aggressive reactions toward people and dogs
Reliable obedience around distractions
Clear guidance so you know exactly what to do
Real behavior change - not temporary fixes
Consultation to assess behavior
Build a personalized training plan
One-on-one sessions with your trainer
Structured progress toward results
3
START SEEING RESULTS
We’ll start meeting one-on-one to work on our goals and take you through your unique training program. We’ll build the confidence and skills not only of your dog, but of you as the owner. As you put in the work, expect to see results fast!
WHAT LIFE LOOKS LIKE AFTER TRAINING
Walk your dog calmly without reacting
Reliable obedience in real-world environments
A dog that listens the first time
Less stress and more control
Lunging or barking at other dogs
Pulling constantly on leash
Reactivity toward dogs or people
Fearful or anxious behavior
Ignoring commands outside
Jumping on visitors or guests
TRAINING PROGRAMS
Ancillary K9 offers customized training programs based on your dog’s behavior and your goals.
Programs may include:
Training programs are recommended after consultation so the most appropriate plan can be developed.
HOW TRAINING WORKS
1
MEETING & CONSULATATION
2
CREATE A TRAINING PLAN
3
START SEEING RESULTS
We’ll start meeting one-on-one to work on our goals and take you through your unique training program. We’ll build the confidence and skills not only of your dog, but of you as the owner. As you put in the work, expect to see results fast!
Your dog fully obedient
Tell us what's happening day-to-day. We'll tell you if this program fits
Dogs improve with clear structure and consistent practice.
Our programs are built on:
Training that works outside the training session
Real-world exposure
This isn't quick fix obedience. This is behavior transformation.
Owner education for long-term success
Clear expectations from day one
HOW TRAINING WORKS
Training begins by understanding what is driving your dog’s behavior and creating a plan that addresses those root causes.
1
MEETING & CONSULATATION
2
CREATE A TRAINING PLAN
3
START SEEING RESULTS
We’ll start meeting one-on-one to work on our goals and take you through your unique training program. We’ll build the confidence and skills not only of your dog, but of you as the owner. As you put in the work, expect to see results fast!
BEHAVIOR PROBLEMS THIS TRAINING HELPS ADDRESS
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Aggression
Reactivity
Barking
Poor recall
Anxiety
WHY THIS TRAINING PRODUCES RESULTS
Many training programmes struggle because dogs only train occasionally. Real behavior change requires consistency, structure, and clear communication.
Ancillary K9 focuses on:
Understanding canine behavior and psychology
Clear leadership and communication
Consistent expectations and structure
Practical obedience in real-world environments
Teaching owners how to maintain results
By addressing the behavior itself rather than only teaching commands, lasting improvement becomes possible.
WHY THIS TRAINING PRODUCES RESULTS
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Daily structure
Clear communication
Real-world exposure
Owner guidance
WHAT LIFE LOOKS LIKE AFTER TRAINING
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Calm walks
Better obedience
Faster response
More control
He is a highly experienced, top-rated dog trainer with extensive experience working with dogs displaying reactivity, anxiety, and complex behavior challenges across the Denver area.
His training focuses on understanding behavior and addressing the root cause, not just managing symptoms.
Stop aggressive reactions toward people and dogs
Reliable obedience around distractions
Clear guidance so you know exactly what to do
Real behavior change - not temporary fixes
Over a Hundred Dogs Trained
10+ Years Experience
4.9-Star Rating (190+ Reviews)
SERVING DENVER AND SURROUNDING AREAS
Ancillary K9 works with dog owners throughout the Denver area including:
Aurora
Lakewood
Littleton
Denver
Centennial
If you are unsure whether your location is covered, simply get in touch.
TRAINING ENVIROMENT
Training takes place in structured
environments where dogs learn
reliable behavior in real-world
situations.
Stop aggressive reactions toward people and dogs
Reliable obedience around distractions
Clear guidance so you know exactly what to do
Real behavior change - not temporary fixes
Structured home environments
Public walking areas
Controlled exposure to distractions
THE TRAINING ENVIROMENT
Training takes place in real-world environments to ensure reliable behavior outside of sessions.
Training environments may include:
This helps dogs build behavior that remains reliable in everyday life.
Real-world training environments.
BEHAVIOR TRAINING PROGRAM
Professional training designed to address aggression, reactivity, and serious behavior problems.
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Behavior modification training
Obedience and impulse control training
Reactivity and aggression training
Recall and leash training
Programs starting from $2,000
Training happens in real-world environments to ensure reliable behavior.
Your dog fully obedient
Tell us what's happening day-to-day. We'll tell you if this program fits
GOOD FIT
Why This Program Works
Structured in-home environment
Behavior is difficult to manage
You want real, lasting results
Owners are trained to maintain results
Real-world behavior focus
Consistent expectations
One-on-one training
You are willing to follow guidance
NOT IDEAL
Why This Program Works
Structured in-home environment
You are looking for quick fixes
Owners are trained to maintain results
Real-world behavior focus
Consistent expectations
One-on-one training
ou are focused only on the cheapest option
Not willing to participate
IS THIS TRAINING THE RIGHT FIT?
Successful training requires participation from both the dog and the owner.
SERVING DENVER AND SURROUNDING AREAS
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Denver
Lakewood
Littleton
Aurora
Centennial
MEET YOUR DENVER DOG TRAINER
Dion Studinski is the owner and head trainer of Ancillary K9.
He is a certified dog behaviorist who has worked with dogs displaying reactivity, anxiety, and complex behaviour challenges across the Denver area.
Rather than focusing only on obedience commands, Dion’s training approach focuses on understanding canine behavior and correcting the root causes of unwanted behavior.
By combining practical training methods with an understanding of canine psychology, he helps owners develop dogs that are calmer, more responsive, and easier to live with.
Many clients contact Ancillary K9 after struggling with behavior problems for months or even years. Training focuses on helping owners regain control while building a healthier relationship with their dog.
Dion Studinski - Professional dog trainer
RESULTS MANY OWNERS EXPERIENCE
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Calm walks without pulling
Reliable obedience outdoors
Less stress at home
Better behaviour around dogs
Clear communication with your dog
Certified Dog Behaviorists with Multiple Credentials
Over 10 Years Experience Working With Complex Behavior Cases
Over a Hundred Dogs Successfully Trained
4.9-Star Google Rating (190+ Reviews)
IS THIS TRAINING THE RIGHT FIT?
This training may be a good fit if
Structured in-home environment
Your dog’s behavior has become difficult to manage
You want professional guidance from an experienced trainer
Owners are trained to maintain results
Real-world behavior focus
Consistent expectations
One-on-one training
You want to understand how to maintain your dog’s training long-term
You want behavior that works in everyday life, not just training sessions
GOOD FIT
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Serious about results
You want professional guidance
You want long-term results
This training may be a good fit if
Structured in-home environment
Your dog’s behavior has become difficult to manage
You want professional guidance from an experienced trainer
Owners are trained to maintain results
Real-world behavior focus
Consistent expectations
One-on-one training
You want to understand how to maintain your dog’s training long-term
You want behavior that works in everyday life, not just training sessions
NOT IDEAL
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Expect instant results without effort
Looking for the cheapest option
Not willing to follow guidance
Successful training requires commitment from both owner and dog.
We guide you every step of the way.
START WITH A TRAINING CONSULTATION
Speak directly with a trainer and get clear next steps for your dog.
READY TO TAKE CONTROL OF YOUR DOG'S BEHAVIOR?
READY TO TAKE CONTROL OF YOUR DOG'S BEHAVIOR?
Speak directly with a trainer and get clear next steps for your dog.
Get Help from Our Dog Training Experts,Today!
We help Denver dog owners resolve aggression, reactivity, and serious behavior issues so their dogs become calm, responsive, and reliable in real-world situations.
DENVER'S TOP-RATED DOG TRAINER
Paws On Training
ANCILLARY K9
DENVER'S TOP-RATED DOG TRAINER
No pressure - just clear answers about your dog and the right next step.
WE FIX REACTIVITY AND BEHAVIOR PROBLEMS
We Fix Reactivity and Behavior Problems
Aggression toward dogs or people
Leash reactivity
Anxiety or fearful behavior
Excessive barking
Reactivity towards dogs or people
Pulling and lack of leash control
Anxiety of fearful behavior
Excessive barking
★★★★★
4.9 Rating from Denver Dog Owners
We help Denver dog owners resolve aggression, reactivity, and serious behavior issues so their dogs become calm, responsive, and reliable in real-world situations
4.9 Rating (190+ Reviews)
No pressure - just clear answers about your dog’s behavior and the right next step.
10+ Years Experience With Complex Behavior Cases
Serving Denver Dog Owners
Certified Dog Behaviorist - 10+ Years Experience
Serving Denver Dog Owners
4.9 Rating (190+ Reviews)
Lunging or barking at other dogs
Pulling constantly on the leash
Reactivity toward dogs or people
Fearful or anxious behavior
Ignoring commands outside
Jumping on guests
Over a Hundred Dogs Successfully Trained
4.9-Star Google Rating (190+ Reviews)
10+ Years Experience With Complex Behavior Cases
Consistent daily training
Clear structure and communication
Real-world exposure to disctractions
Owner guidance to maintain results
Behavior modification training
Obedience and impulse control
Reactivity and aggression training
Recall and leash training
Structured home environments
Controlled exposure to distractions
Public walking areas
Real-world obedience situations
(720) 734-4747
(720) 650-8083
Struggling with your dog’s unwanted behaviors? Ancillary K9 Dog Training’s Behavior Modification program in Colorado is designed to transform reactive, anxious, or aggressive dogs into well-mannered companions. Our expert trainers use proven, science-based techniques to address barking, leash pulling, reactivity, aggression, anxiety, and more—right here at our state-of-the-art training facility in Colorado. Whether your pup needs help overcoming fear-based behaviors or breaking bad habits, we tailor every session to your dog’s unique needs, ensuring long-term success. With personalized attention and a structured environment, we help dogs build confidence and trust while teaching them the behaviors you want. Don’t wait—give your dog the training they need to thrive.
Want a well-behaved dog that listens every time? Ancillary K9 Dog Training’s Obedience Training Program in Colorado helps dogs of all ages master essential commands like sit, stay, come, down, and heel—no more pulling on the leash or ignoring your calls. Our expert trainers use proven, reward-based methods at our professional training facility in Colorado, ensuring your dog learns in a structured, distraction-free environment. Whether you have a stubborn puppy or an older dog needing better manners, we customize training to fit your dog’s unique needs, helping them become a polite, obedient companion. Imagine stress-free walks, guests being greeted calmly, and a dog that responds instantly—that’s the Ancillary K9 Dog Training difference. Get started today and enjoy a lifetime of great behavior!
Experience the ultimate transformation with our private, personal, one on one dog training lessons at Ancillary K9 Dog Training. In our state-of-the-art Colorado training facility, our expert trainers deliver individualized sessions designed to address your dog's unique needs. Our private dog training lessons focus solely on one on one instruction, ensuring undivided attention and a customized approach that accelerates progress—whether you're tackling basic obedience or advanced behavioral challenges. With proven positive reinforcement techniques at the core of our personal dog training lessons, each session builds confidence and fosters lasting change. Choose our one on one dog training lessons in Colorado to see measurable improvements quickly and enjoy the peace of mind that comes with personalized, expert guidance. Sign up today and let Ancillary K9 Dog Training show you how private, personal dog training lessons can unlock your dog's full potential for a lifetime of exceptional behavior.
Struggling with a reactive dog that barks, lunges, or overreacts to other dogs, people, or new environments? Ancillary K9 Dog Training’s Reactive Dog Training Program in Colorado is designed to help your dog stay calm, focused, and under control—no matter the distraction. Our expert trainers use science-backed techniques to address fear, anxiety, and overstimulation, helping your dog build confidence in a structured, safe environment at our professional training facility. Through personalized training plans, controlled exposure, and proven desensitization methods, we teach your dog to respond appropriately instead of reacting impulsively. Imagine peaceful walks, stress-free outings, and a dog that listens—even in challenging situations.