Giovanni Maria Gnemmi is a bovine practitioner working for the Spanish company BOVINEVET INTERNACIONAL Bovine Ultrasound Services & Herd Management, and as professor of Bovine Reproductive Pathology at the veterinary faculty of the Catholic University San Vincente Martir of Valencia (ES). Since 1993, he has been working with ultrasonography in cattle, trying to incorporate this method into herd management. Dr. Gnemmi’s fields of interest are reproductive management (ultrasound diagnosis of embryonic death, follicular dynamics, synchronization programs, uterine and ovary ultrasonography, transition management), preventive medicine, and continuing the education of dairy workers and veterinarians. In these areas of expertise, he has developed international experience, both as a consultant to large herd managers in Europe, South America, China, the Middle East, and Africa, and as an instructor on more than 280 training courses around the world. He is the author of two atlases on bovine reproductive ultrasonography (Le Point Veterinaire 2004, MEDCOM 2010 French version, Blackwell 2011 English version). He has numerous publications, many of them in peer-reviewed journals, and has presented approximately 300 invited lectures at national international meetings.