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The Veterinary Behavior Center

Find peace in the best care possible.

Colorado's largest veterinary behavior and animal psychiatry practice and Hawaii's only one— serving everywhere from the mountains to the sea!

For medical emergencies, contact your local primary care or urgent care veterinarian

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Our Specialty

As a veterinary behavior specialist team, we have the unique ability to alleviate suffering by treating both the body and mind of patients who need us.  

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We engage in patient-centered, client-tailored and doctor-led service.  We work with you as a team.  We believe that the best way to help our patients is to empower pet parents by giving them the tools they need to help the animals in their care.  Utilizing learning science and veterinary psychiatry, each diagnostic and treatment plan is personalized, prioritized and practical. 

WE TREAT THE FOLLOWING BEHAVIORS OF CONCERN:

horse behavior

Aggression
Anxiety/fears/phobias
Repetitive behaviors
House soiling
Prep for baby
Separation-related behaviors

dog attention

Self-injurious behavior
Attention-seeking behavior
Leash reactivity
Transportation reluctance
Feather-damaging behavior

german shepherd behavior

Excessive vocalization
Elderly behaviors
Inappropriate cat scratching
Unruly behaviors
And more...

OUR SERVICES

bird behavior

Pet psychiatry for animals of any species and their parents in Northern Colorado, on Oahu, HI and beyond.

Vet-to-Vet Collaborative Services 

From anywhere in the world, veterinarians can schedule a teleconsult with one of our doctors to gain support for your difficult cases.

A unique fusion of hands-on support from our Behavior Therapy Technicians and teleconsult service to your veterinarian.  Fully virtual possible!

Cookapoo Dog

Behavioral Coaching

Whether referred by your veterinarian for a diagnosed behavior problem, or seeking help on your own, we can provide the behavior modification support you need without direct involvement from one of our doctors.

Dog Walk

Learn. Teach. Play.

Build Community. Have Fun.

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Consulting

Need an expert in veterinary behavior?  We love projects!  Contact us with additional details.

Animal Welfare Services

For the hard decisions.

Planning for their best life.

Feline Friend

Care Plans

Maximize your investment and your success with a financial payment plan.

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Shelters & Rescues

Consulting services for individual patients as well as development of organizational level behavioral health plans.

Zoos & Wildlife Sanctuaries

Individual patient or colony assessments as well as development of organizational level behavioral health plans.

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LATEST UPDATES

NOW SEEING APPOINTMENTS IN LONGMONT ON WEDNESDAYS

​​We're excited to partner with our colleagues at Longmont Small Animal Hospital. Dr. Fagen is now seeing patients every Wednesday at this location- we hope this serves our northern residents better! Please let us know if this location is preferable for you; our team can prioritize scheduling you here in the future. We love Longmont and our NoCo families!

kitty behavior

WHAT PEOPLE SAY

Courtney K.

with Gretta May

Dr. Fagen is professional, compassionate, and extremely knowledgable.  Taking my dog to Dr. Fagen was truly the best decision I have ever made.  Dr. Fagen helped my dog and I get through separation anxiety when nobody else could and I am extremely grateful.  Working with her was a delight and her recommendations were easy to implement.  I'm a professional dog trainer and even we need help sometimes.

Robyn 

with Fernando

Dr. Fagen helped us to course correct when our beloved sixteen-year-old Persian began acting out two years ago.  He was defecating out of his litterbox, and the situation was creating a great deal of stress for us both.  She was able to examine him and physical causes for his stress symptoms. Also, she offered us coaching on how to more efficiently and kindly treat the behavior.  I would highly recommend her to any person ready to have a healthier and happier feline at home.

Cara & Ben

with Yogi & Rocket

We are so grateful to Dr. Fagen for her help with prepping our dogs for the arrival of our baby! We have been so worried about how our dogs would react to the change, and Dr. Fagen was extremely thorough, giving us all the tools to be able to feel safe and secure in preparing for this big moment in our lives.

Dr. Reiter

with Greta

Dr. Fagen is a fantastic behavior doctor. She cares deeply for her patients and has the education needed to help your dog or cat with any behavioral concerns. She will do a very thorough assessment of your pet and will be with you every step of the way to monitor progress. I highly recommend her!

CONTACT US

Call or Text 303-536-1802

info@vetbehaviorcenter.com

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OUR LOCATIONS​

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The Veterinary Behavior Center

5345 Arapahoe Ave.

Unit 7

Boulder, CO 80303

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Longmont Small Animal Hospital

104 S Main St.

Longmont, CO 80501

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Ali'i Animal Hospital

942 Kawaiaha'o St.

Honolulu, Hawaii 96814

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HOURS

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

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8:30am - 5pm MST

8:30am - 5pm MST

8:30am - 5pm MST

8:30am - 5pm MST

8:30am - 3pm MST

​  8:30am - 5pm MST*

 

*technician appointments only

Messages received during evenings, weekends, and holidays will be addressed as quickly as possible, including requests for prescription refills. We are unable to respond to text/voicemail or email between the hours of 3:00 p.m. on Friday and 8:30 a.m. on Mondays.

 

Closed New Years Day, Independence Day, Memorial Day, Labor Day, Thanksgiving Day, Thanksgiving Friday and Christmas Day.  Early closures on New Years Eve and Christmas Eve. 

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Dog training, cat training, veterinary behavior, veterinary psychiatry, animal behavior, behavior modification, animal psychiatry, animal behavior specialist, Front Range, Hawaii, Colorado.​

Copyright © 2025. The Veterinary Behavior Center, LLC.  All rights reserved.

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