Angus graduated from Melbourne University in 1978, and worked in private practice for a year, before heading to Ontario Veterinary College, Guelph, Ontario, Canada in 1980 to work and study for a Diploma in Large Animal Medicine. He continued at Ontario Veterinary College as Assistant Professor in Large Animal Medicine, Surgery and Reproduction for the period 1982-84. Angus then travelled to Colorado State University, USA, where he was employed as Assistant Professor in Equine Reproduction and Field Service 1984-1988, and as Associate Professor in Equine Medicine and Field Service 1988.