Aaron Adams as Self - Chef, Portobello Trattoria

Jonathan Balcombe as Self - Ethologist & Biologist

T. Colin Campbell as Self - Professor of Nutritional Biochemistry

Gary L. Francione as Self - Distinguished Professor of Law

Jan Gerdes as Self - Hof Butenland

Robert Goodland as Self - Tropical Ecologist

Susanne Gura as Self - Nutritionist

Hendrik Haßel as Self - Animal Equality

Melanie Joy as Self - Sociologist & Psychologist

Kati Kosler as Self

Jack Lindquist as Self - Professional Track Cyclist

Karin Mück as Self - Hof Butenland

Sharon Núñez as Self - Co-Founder, Animal Equality

Lauren Ornelas as Self - Food Empowerment Project

William Potter as Self - Journalist and Author

Tom Regan as Self - Distinguished Professor of Philosophy

Ria Rehberg as Self - Animal Equality

Neil Robinson as Self - Vegan-Organic Farmer

George Rodger as Self - Chair, the Vegan Society

Matt Ruscigno as Self - Registered Dietitian

Kurt Schmidinger as Self - Geophysicist & Food Scientist

Peter Singer as Self - Professor of Bioethics