has input has input heterotrophy carnivory http://orcid.org/0000-0002-2908-3327 In this class, we make no commitment to whether the organism belongs to a taxon which has adapted to a carnivorous diet: this is a functional defintion, referencing the act of eating, primarily, an animal-based diet. http://orcid.org/0000-0002-4366-3088 A heterotrophic process during which a living entity acquires food and energy from consuming living metazoan (animal) material. zoophagy Metazoa