Setting the Standard for Veterinary Excellence in St. Clair County
Same Day Appointments Available
Premier Pet Care in O'Fallon, IL
Committed to Exceptional Care
The staff at Animal Hospital of O'Fallon is highly trained to provide the best possible care.
We’re equipped to deliver services from the most basic to the most complex. Our clinic is an integral part of the St. Clair County, Illinois community. Whether routine care, emergencies, or illness, we treat your pet as one of our own.
You can rest assured your companion is in capable, compassionate hands.
Our hospital is trusted by pet parents who rely on experienced veterinarians for Dog and Cat care. As one of the leading animal clinics in O'Fallon, IL, we provide compassionate service for every pet.
Seamless Visits,
Start to Finish
We want your visit to feel easy—not like a chore. Expect state-of-the-art care and modern diagnostic procedures. We offer thorough, routine examinations for proactive wellness. Clear guidance and friendly service help every step of the way. Our goal is a smooth, reassuring experience for pets and people.
Whether it’s a routine visit or advanced treatment, our veterinarians deliver expert care in a modern clinic. We focus on lifelong animal wellness tailored to every pet.
Compassionate, Comprehensive Pet Care
At our hospital, we believe every pet deserves care that is both heartfelt and thorough. Our compassionate approach ensures your pets feel safe and respected, while our comprehensive services from preventive wellness and diagnostics to surgery, dentistry, and senior care support their health at every stage of life. Guided by decades of experience and a dedicated team, we work with you to create personalized treatment plans that keep your pets healthy, happy, and thriving.
Get to Know Our Veterinary Team
We know your pet is part of the family and we treat them that way. Our team is here to provide thoughtful, reliable care to help your pet live a long, happy, and healthy life. As a trusted pet hospital, we offer a full range of veterinary services to keep your pets healthy and thriving.
Dr. Brett Ziegler
DVM & Co-Owner
Dr. Craig Thacker
Associate DVM
Dr. Brett Ziegler
DVM & Co-Owner
Dr. Craig Thacker
Associate DVM
Get to Know Our Veterinary Team
We know your pet is part of the family and we treat them that way. Our team is here to provide thoughtful, reliable care to help your pet live a long, happy, and healthy life.
As a trusted pet hospital, we offer a full range of veterinary services to keep your pets healthy and thriving.
Dr. Brett Ziegler
DVM & Co-Owner
Dr. Craig Thacker
Associate DVM
Dr. Brett Ziegler
DVM & Co-Owner
Dr. Craig Thacker
Associate DVM
Tailored Veterinary Solutions
We offer a wide range of services aimed at ensuring the lifelong health and happiness of your pets. Our comprehensive services are tailored to address all your pet's needs conveniently under one roof.
From exams to advanced procedures, our animal clinic offers everything your pet's needs. Pet owners rely on our hospital for preventive care and advanced treatments.
Full Service Vet Clinic
Preventative Care
Diagnostic Care
Pain Management
Puppy & Kitten Care
Senior Pet Care
Veterinary Pet Surgery
Exotic Pet Care
Complementary Therapies
What Our Pet Parents Are Saying
"The entire staff is wonderful. Making the appointment was easy, their patient record system is great, the doctor was wonderful. The vet tech was super friendly and caring to my dog. The front desk was great. I am glad I picked this clinic!"
- Michael F
"Appreciate Animal Hospital of O’Fallon! Professional and friendly - vet, techs, front desk, you name it. Easy to work with and care for our pets, dog and 2 cats, is exemplary. We are grateful for opportunity to work with them."
- John B
"We have been taking all of our furbabies here for the last 2 years and can’t imagine going anywhere else. The Dr. and the staff are all very friendly and supportive of our needs. Would highly recommend them to anyone!"
- Ana
"Love the doctor! He has been so open about the situation going on with my dog. He seemed to speak from the heart about him as if it was his pet and not just another patient. This whole office is very caring and friendly."
- Anna D
"We are treated with kindness and respect by Dr Z and the staff. Everything is explained to us until we are comfortable with my dogs care, I feel very fortunate that we can go to such a wonderful vet so close to home!"
- Karhy C
Contact Us for Compassionate Care
306 E Hwy 50, O'Fallon, IL 62269
Monday : 8:30 AM–7 PM
Tuesday : 8:30 AM–6 PM
Wednesday : 8:30 AM–6 PM
Thursday : 8:30 AM–7 PM
Friday : 8:30 AM–6 PM
Saturday : 9 AM–5 PM
Sunday : Closed
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