During his 40-year career, R. Dean Boyd earned a global reputation for innovation in animal nutrition research.  His career began on the faculty at Cornell U. in Animal Science and Division of Nutrition.  It concluded with the Hanor-Triumph Foods group. He coauthored 307 scientific publications as peer-review, books, book chapters and translational papers. His publications appear in 21 journals with collaborators from 32 institutions. His pioneering work at Cornell on the regulation of nutrient use is considered landmark.  His most consequential discovery was that deficit essential fatty acid intake by lactating sows causes seasonal infertility, but is resolved by adequacy of both.  He delivered the prestigious Dunkin Lecture at APSA (2019), the Howard Dunne Lecture at AASV (2012) and he served on the Science advisory team for the Gates Foundation; the latter published in Lancet Global Health to extend Anim. Sci. knowledge to maternal-infant health solutions in developing countries.  His ability to translate basic science to practice has brought transformational change to his discipline and is his legacy.  He and his wife Marsha have 4 children, 17 grandchildren.