Dr Karen Brenner graduated from the University of Melbourne, with first class honours in 2003 and initially worked in small animal general practice in south-eastern Melbourne.

In 2007, Karen moved to the United States and completed a one year, rotating small animal internship at Kansas State University, followed by a three-year residency in Small Animal Internal Medicine.

Karen became a Diplomate of the American College of Veterinary Internal Medicine in 2011 and at the end of that year she returned to Melbourne and since then has been working in private referral practice