Welcome to Petit Brook Veterinary Clinic

Located in beautiful Colchester, VT
Call us at 802-878-3713

At Petit Brook Veterinary Clinic, you will find a caring, compassionate staff ready to attend to you and your pets’ needs. We provide individualized care and attention to each patient. Petit Brook Veterinary Clinic is a full service animal hospital in a brand new facility.  In our new facility we are proud to offer digital radiography, dental radiography and therapeutic laser treatments.  Our doctors believe that by taking the time to listen to you, they can best understand your pet’s needs and provide the best options for their care.


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Dr. Millie Armstrong | Dr. Michael Tanneberger | Dr.Alice McCormick 
5866 Roosevelt Hwy Colchester, VT 05446
 | Petit Brook Veterinary Clinic |  802-878-3713



If your pet needs to be seen outside of our business hours please call 

at 802-863-2387




Meet Our Skilled Team

Learn Who We Are

  • Millie

    Dr. Millie was born in Burlington and grew up in Pennsylvania. She worked in pharmaceutical research before going to veterinary school at the University of Tennessee in Knoxville. Dr. Millie worked in various small animal clinics in Vermont before settling into Petit Brook Veterinary Clinic in 2000.  She is very active in the Vermont and New England Veterinary Medical Associations. She is a huge fan of wiggly boxers but does not have one of her own at the moment. Her kitty Emma has her trained her well and allows Millie to continue to live with her.  

  • Cara

    Cara joined the Petit Brook team in early May of 2016. Cara has worked in the large animal field of veterinary medicine and grew up on a dairy farm in Milton.  She has always had a passion for the small animal field and is excited to be a part of Petit Brook.  

  • Amanda

    Amanda has been a technician for 11 years now. She has been at Petit Brook Veterinary Clinic for 10 years. Amanda is our social media lady and keeps our Facebook page fun and full of information. She has a special love for giant breed dogs. She shares her home with her husband, her son, daughter, a lovable English Mastiff named Paige and her kitty, Sansa Pickles. 

  • Ari

    Ari is originally from Portland, Maine. Ari has been part of the Petit Brook family for 6 years now!  She graduated from the University of Maine with  a bachelors in Animal Science, and moved to Vermont after graduation. In her spare time she likes horseback riding and doing agility training with her two dogs Riley and Witten.  

  • Angie

    Angie is the Office Manager here and also a certified Veterinary Technician. She is a graduate of Vermont Technical college with an Associates Degree in Veterinary Technology.  Veterinary medicine has always been a passion of hers and she has been either working or volunteering in the Veterinary field for over 16 years.  Pictured above is her dog, Penny!

  • Chris

     Chris has been a member of the Petit brook Veterinary Clinic staff for over 22 years!  She graduated from St. Michael's College in 1988 with a BA in Fine Arts.  She serves in all capacities of the clinic and in 2005 passed the Veterinary Technician National Exam. She is a member of the Vermont Veterinary Technicians Association with a special interest in behavior.  She has an exuberant cat, named Spartacus and her corgi, Aretha, keeps everyone in line!

  • Alice

    Dr. Alice grew up in Lexington, Massachusetts and completed her undergraduate studies at Middlebury College. She traveled down south to attend veterinary school at the University of Pennsylvania where she studied small animal and equine medicine and finally understood why people love Spring (no mud!). Happily returning to New England, (home of the Patriots!) she practiced emergency and routine small animal medicine in Massachusetts for several years before moving to Vermont. She now lives in Fletcher with her husband, coonhound mix Clark (pictured above) and a kitty named Pepper. In her free time, she can be found running, hiking, biking, skiing, playing soccer, gardening, cooking or curling up with a good book.

  • Michael

    Dr. Mike grew up in Connecticut and graduated from the University of Connecticut before attending veterinary school at Cornell University.  Prior to his arrival at Petit Brook, he was a partner in a large mixed practice in Northern, NY and then a small animal practice here in VT.  From his perspective, sharing information with clients and having them involved in decisions about their pets are the cornerstones of veterinary medical practice.  He is involved in coaching softball, basketball and Odyssey of the Mind with his wife and children.  He loves hiking and being on the lake.  His dogs have included everything from dachshunds to great danes. 

Location

Find us on the map

Office Hours

Our Regular Schedule

Monday:

8:00

6:00

Tuesday:

8:00

5:00

Wednesday:

8:00

6:00

Thursday:

8:00

5:00

Friday:

8:00

5:00

Saturday:

8:00

12:00

Sunday:

Closed

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Testimonials

Read What Our Clients Say

  • "Everything I would want in a clinic and it's staff..."
    -SH
  • "I know your team is one of the BEST! Having been a Dog Mom for most of my life I appreciate everything you do! When I received Brodie 5 years ago and chose Petit Brook I felt so comfortable right away and now that we are in your beautiful facility we could not be happier. Always the same smiling faces which is so important and your care and concern is beyond measure! Thank you for caring for our family!"
    -KS
  • ""My dog was exceptionally frightened and you did an excellent job of making the visit as comfortable as possible for her. Thank you!""
    --RC
  • ""Drs. Millie and Mike are the best! The new clinic is beautiful but for me it is the people. All the staff is friendly helpful and just down right wonderful. Thanks for always being there for Lucas Louie and Me too!""
    --TW
  • ""I LOVE the new hospital! I also love that everyone who works there knows me and my dog and what's going on. I love that you all listen to what I have to say and are very thorough about answering my questions and offering alternatives and suggestions. I also love that you make follow-up calls, and that I get a quick call-back when I initiate an email or phone call.""
    --BP
  • ""Everyone at the office makes you feel like they are all a part of your family and take the time to show they care about the pets you bring in. I always feel like me and my dog(s) and cat are the only ones there when we have appointments. Millie is very laid back and welcoming and truly a caring vet. Doctor Mike really knows his stuff and makes sure to relay that information in easy to understand terms.""
    --CR
  • "We really feel that you value and care about our dogs!! They are our babies and we feel like you all understand and appreciate that!"
    --KS
  • "Very impressed with your clinic and how well everyone communicates to each other. Absolutely loved Dr. Millie she was so kind to Tank, did a very detailed exam, contacted my vet back in Colorado to obtain records, reviewed them and then called me, herself. I will definitely share my experience and send other friends to your clinic."
    --DGB
  • "I love that Dr. Mike is always willing to take the time to explain things and make sure I don't leave the appointment feeling rushed.
    He does a great job of letting us know all our treatment options, and he is supportive and respectful of whatever choices I make for my pets."
    --LM
  • "The drs are friendly considerate and answer all questions without you feeling rushed. The front office team is warm and welcoming."
    --WK