


Trusted Spay & Neuter Services in
O'Fallon, IL

At Animal Hospital of O'Fallon, we believe proactive care is the key to lifelong wellness. Our spay and neuter procedures are performed with your pet’s comfort and safety as our highest priority. Using advanced monitoring and strict surgical standards, we minimize risk and promote a smooth recovery. These preventive surgeries not only stop unwanted litters but also contribute to better long-term health. You can trust our caring team to treat your pet with the same love and attention we give our own.
Our veterinarians specialize in spaying and neutering Dogs and Cats with exceptional care. As a trusted animal hospital, we help every pet live a healthier, happier life.


Spaying and neutering help your pet live a longer, healthier, and more content life. These procedures reduce the risk of reproductive cancers, infections, and hormone-related illnesses. They can also prevent challenging behaviors like roaming, spraying, or aggression. At Animal Hospital of O'Fallon, our veterinarians combine skill with compassion to ensure every surgery is gentle, precise, and safe. The result is a happier, calmer pet—and a more peaceful home environment for you.




We know that surgical procedures can feel stressful, which is why we keep pet parents informed and comfortable every step of the way. From your first consultation to post-surgery care, our experienced veterinary team provides complete support. Each pet is closely monitored before, during, and after their procedure for safety and peace of mind. At Animal Hospital of O'Fallon, we’re proud to deliver surgical expertise backed by genuine care and understanding.
Choosing to spay or neuter your pet is a simple step that creates lasting impact. It prevents unplanned litters, reduces strain on local shelters, and promotes responsible pet ownership. By making this compassionate choice, you’re helping improve animal welfare across our community. Animal Hospital of O'Fallon is proud to partner with pet owners who care deeply about the well-being of both their pets and the world around them.

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.

DVM & Co-Owner

Associate DVM

DVM & Co-Owner

Associate DVM
Spaying and neutering can do more than prevent unwanted litters—it supports your pet’s overall health and behavior. Spay & neuter procedures lower the risk of certain cancers and infections, and help reduce behaviors like spraying, howling, or roaming. Choosing to spay & neuter your pet also means a calmer, healthier companion and a more peaceful home—for both of you.
Pet parents rely on our vet clinic for expert spay and neuter services. Our hospital combines compassion with medical skill to ensure the best outcome for every Dog or Cat.

Meet Our Co-Owner & Medical Director
Dr. Brett Ziegler is dedicated to practicing veterinary medicine with a compassionate and personalized approach, ensuring the health and well-being of each patient while building strong relationships with their human families.

DVM & Co-Owner

Associate DVM
Dr. Brett Ziegler is dedicated to practicing veterinary medicine with a compassionate and personalized approach, ensuring the health and well-being of each patient while building strong relationships with their human families.

"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












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