His research covers basic and applied science, with a focus on reproductive physiology in sheep and goats, as well as the ratite birds (emu, ostrich). He also has projects on rats, dogs, and marsupials (most targeting new approaches to contraception), and on endangered African mammals (wild dog, pygmy hippopotamus, rhinoceros). His studies involve neuroscience, histology, endocrinology, metabolic physiology, behaviour, reproductive technology, molecular biology, and computer modelling. He has won more than AU$4 million in research grants, published more than 290 refereed scientific papers (h-index = 40; more than 5000 citations – an average of 25 per article) and trained more than 25 PhD students.