Dr. Lee Bregitzer and his wife Max opened the doors to Columbine Animal Hospital and Emergency Clinic in June 1972. It is one of the longest established and best-equipped small animal facilities in the southwest Littleton area. The original Columbine Animal Hospital Staff included Lee Bregitzer and assorted friends helping out as needed. As the practice grew, full time staff was hired including Lee’s mother, Mrs. B. as the office manager and receptionist. Our staff has grown tremendously over the years consisting of 5 full time veterinarians and numerous support staff members.