Geert Opsomer graduated as a DVM at Gent University (Gent, Belgium) in 1989. Immediately after graduation, he started to work in the Department of Reproduction, Obstetrics, and Herd Health at the same university. His main interest was related to fertility and herd health control in high-yielding dairy herds. In 1995, he obtained a master's degree (Ms) in animal production with a thesis entitled 'Energy metabolism in the high yielding dairy cow'. In 1999, he defended his Ph.D. thesis, entitled 'Postpartum anoestrus in high yielding dairy cows: a field study'. In November 2002, he became a diplomate of the European College of Animal Reproduction (ECAR), and in 2003, a diplomate of the European College of Bovine Health Medicine (ECBHM). At the moment, he is Full Professor of Bovine Herd Health at the Veterinary Faculty of Gent University. Besides educating undergraduate and graduate students, he is currently supervising multiple Ph.D. students researching a variety of aspects of bovine herd health and reproduction.