Peter J Chenoweth (Edited By) Peter Chenoweth has Veterinary and PhD degrees from Australia, and also Australian and US specialty qualifications in animal reproduction. He has taught in veterinary schools in both countries, including as the inaugural Coleman Chair in Food Animal Preventive Medicine at Kansas State University and the inaugural Professor of Theriogenology at Charles Sturt University. He has numerous publications in animal reproduction, particularly on male aspects, and a number of texts including "Animal Andrology: Theories and Practices" (2014 CABI). He co-founded the Association for Applied Animal Andrology, was recognized as Theriogenologist of the Year in 2013 and received the Gilruth Prize from the Australian Veterinary Association in 2017 for "outstanding contributions to veterinary sciences". Steven Lorton (Edited By) Dr Steven P Lorton received the graduate degrees [M.S., 1975; Ph.D., 1978] from the University of Wisconsin-Madison. Dr. Lorton was a post-doctoral associate [1978-1980] in the laboratory of Dr. R.H. Foote at Cornell University. In 1980, Dr. Lorton joined the research department of American Breeders Service [now ABS Global] as Research Assoociate and later Manager of Biological Research. He later joined Minitube of America / Minitüb Gmbh as physiologist and customer consultant. Later he joined Reproduction Resources in the same capacity. He has held the positions of Adjunct Associate Professor, Dept. of Animal Science, University of Wisconsin - Madison [1985 - present], Vice President of the Association for Applied Animal Andrology [AAAA; 2012-2014] , AAAA President [2014 - 2020] and AAAA Past President AAAA [2020- present].