Peter is a Professor at the University of Alberta, Faculty of Law. He specializes in animal law, criminal law and the law of evidence, and has taught a course in Animals and the Law since 2006. He is the author or editor of eight books, including Animal Law in Australasia: A New Dialogue, the first book ever published in the Southern Hemisphere to focus exclusively on animal law issues; and Canadian Perspectives on Animals in the Law. From 2001-2005, he was the Director of the Animal Rights Legal Advocacy Network, a group of lawyers working on animal-related issues in New Zealand. In 2015, Peter acted as lead counsel for Animal Justice when it intervened in the case of R v DLW at the Supreme Court of Canada.