Williams-Sebby Veterinary Clinic & Pet Resort is a full-service animal hospital and welcomes both emergency treatment cases as well as pet patients in need of routine medical, surgical, and dental care. Our Doctors have years of experience treating severe conditions and offering regular pet wellness care.

Beyond first-rate pet care, we make our clinic comfortable, kid-friendly, and calm, so your pet can relax in the waiting room and look forward to meeting our SAN MARCOS veterinarians. We are dedicated to providing the highest level of veterinary medicine along with friendly, compassionate service.

We believe in treating every patient as if they were our own pet and giving them the same loving attention and care. We are a group of highly trained, experienced animal lovers who are devoted to giving our patients the best care possible. If you have any questions about how we can care for your pet, please don’t hesitate to call us at (512) 396-1996. Thank you!

Our Core Values


We love what we do and couldn’t imagine a world without our four-legged companions. We embrace the unique gift that is the human-animal bond, and are committed to enriching the lives of our patients and their families. Passion is our driving force.


Open, honest, respectful communication is how we earn trust. It is an honor to be chosen to care for pet families, so we focus on building trust with our clients and patients by giving 110% effort, every day.


Communication is the foundation of our success. We take time to make sure that our clients understand our recommendations and the outcomes we are creating for their pets.


Without teamwork, our hospital would not be the exceptional place it is. We capitalize on all of our team members’ unique skills, preferences, and abilities to deliver the best care to you and your pet. What’s more is we partner with you, too, as an invaluable member of the team.


We value integrity and treat all people and patients with dignity and respect. Respect means we are always kind, and we do not pass judgment. It is by true mutual respect within our team and with our clients that amazing things happen for our patients!


We believe in not only providing superior pet care but also in empowering pet owners by sharing our extensive knowledge with you. Informed pet owners make for better pet parents.


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