CastleRock Pet Hospital is under new ownership as of June. Dr. Donnie Hoff purchased the practice from Dr. Margaret Stummer. The hospital is a full-service clinic that offers nail trims, vaccines, orthopedic surgery, ultrasounds, x-rays and more for dogs and cats. CastleRock Pet Hospital is located at 6930 RR 2338, Georgetown. 512-868-2280.