Dr. Brennan is originally from Memphis. She then went to Auburn University for both her undergraduate degree and Doctor of Veterinary Medicine. She previously practiced in Georgia before moving to Birmingham. Her professional memberships include Jefferson County Veterinary Medical Association, Alabama Veterinary Medical Association, and American Veterinary Medical Association.
Outside the clinic, Dr. Brennan enjoys spending time with her husband, son, and daughter. Her four-legged family members include two German Shepherd dogs. She is a member of the Episcopal Church of the Ascension. Her other interests are college sports, baking, and gardening.