About Us

Our History
Dr. H.R. Hornbaker was the original owner of what is now known as Knox Pet Clinic until 1960 when Dr. Donald Reeder graduated from the University of Illinois and purchased the veterinary practice. The practice was located on East Main Street in Galesburg, Illinois but was moved to West Main Street when Dr. Reeder built the clinic’s current location. The practice was known as Knox Veterinary Clinic. Originally, the practice was made up of 90% farm animals and only 10% pets. After two years of service in the military, Dr. Harold W. Watters joined the clinic in 1969. The number of pets being seen was increased from what was previously mostly farm calls. In 1975 the building was expanded to include the waiting room and large exam room as well as the second floor.

1975 also brought another addition when Dr. Benton C. Allen joined the practice, he had previously practiced on North Henderson Street. In 1985 Dr. Reeder retired from his work at Knox Pet Clinic. A small building in Knoxville was purchased and the Doctors opened Knox Pet Clinic’s second location at 105 S. Public Square in 1986. Farm calls were discontinued in 1988 and the practice moved to exclusively seeing pets. Dr. Brian K. Siever joined the clinic in 1999 and became business partners with Dr. Watters in June 2006. The name of the practice was changed in 2006 from Knox Veterinary Clinic to Knox Pet Clinic. In January 2016, Dr. Siever became the sole owner of Knox Pet Clinic. Knox Pet Clinic currently employs 3 full-time veterinarians, 2 part time vets, 3 certified veterinary technicians, a certified groomer, and over 10 other valuable team members.

We offer our clients a variety of payment options:

  • VISA
  • MasterCard
  • Discover
  • Cash or Check
  • CareCredit

Our Building

Knox Pet Clinic’s Knoxville, Illinois location is housed in the last remaining wood commercial building from Knoxville’s early years. Built in the mid-1800’s it has been in continuous use since that time.

Originally built and used for storage by the government, this building has had over 20 owners throughout its history. The building started out as a simple wood structure with glass windows and decorative trim. As the building passed to new owners over time it was modified to keep up with the changing culture of Knoxville. Set in the heart of town on the west side of Knoxville’s Square, this was a prime spot for owners to have a shop. Our little building has been a clothing store, a hardware store, framing shop, lawyer’s office, residential quarters and now our veterinary clinic, which opened in this facility in 1986.

We are proud of our building’s history, whether a little store or someone’s home. We have been a part of the Knoxville community for over 30 years and look forward to serving the needs of pet owners for many more years to come.

We have two awesome locations for your convenience!


Knox Pet Clinic

658 W Main St
Galesburg, IL 61401


Mon-Fri7:30am - 5:00pm
Sat8:00am - 12:00pm


Knox Pet Clinic - Knoxville

105 North Public Square

Knoxville, IL 61448



Mon: 8:00am - 4:00pm
Tues: 8:00am - 4:00pm
Thurs:8:00am - 4:00pm

If you are experiencing an after-hours emergency, please call 309-342-1759
Send us a message!

If you have a question, you can complete the form below and a member of our team will get back to you as quickly as possible.