Prof. Stefan Arnhold studied veterinary medicine at Justus Liebig University Giessen from 1984 to 1990. In 1990, he received his license to practice veterinary medicine. From 1991 until 1996, he worked on his doctorate at the Institute of Anatomy at the University of Cologne as an external doctoral candidate. In 2002, he obtained his habilitation in veterinary anatomy, histology, and embryology at the Faculty of Veterinary Medicine, Justus Liebig University Giessen. In 2005, he completed his second doctorate as Dr. rer. medic. at the Institute of Anatomy at the University of Cologne. From 1990 to 2004, he was a scientific assistant at the Institute of Anatomy, University of Cologne. Partially in parallel, from 2002 to 2007, he worked in veterinary anatomy at the Department of Veterinary Anatomy at Justus Liebig University Giessen. From 2004 to 2007, he was an Assistant Professor at the Institute of Anatomy, University of Cologne. In 2007, he was appointed as a full professor at the Institute of Anatomy at the University of Giessen.

From 2010 to 2016 and from 2019 until 2021 he was dean for study affairs at the Faculty of Veterinary medicine, JLU Giessen.

Since 2021 he is Dean at the Faculty of Veterinary Medicine, JLU Giessen.