This is the fourth edition of our 120-hour international course, delivered online and in Spanish. It features faculty members—all holding doctoral degrees—from five countries: Brazil, Guatemala, Mexico, the United States, and Spain. To date, we have trained 45 professionals from various fields who are committed to carrying out their work through the lens of "One Health." Offered annually during the autumn, the course aims to provide a space for learning, the exchange of ideas, and the development of critical thinking—all integrated within the One Health framework across diverse disciplines.