If you live in SAN MARCOS or the surrounding area and need a trusted veterinarian to care for your pets – look no further. Dr. Todd E. Sebby & Dr. Mark Williams are licensed TX veterinarians, treating all types of pets. Your pets’ health and well-being are significant to us, and we take every possible measure to give your animals the care they deserve. 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 veterinarian.