Knoll Animal Hospital previously known as Countryside Animal Clinic has been a part of the Carol Stream community since 1967. The hospital is still happy to be family-owned and operated in Carol Stream, IL. We treat every client like they were a part of our family. Other veterinary hospitals may offer similar services, but our services are the best, and come with a personal touch. We want you and your beloved pet to feel at home and comfortable every time you visit.