Striving to better understand exemplification, this study examines the types of animal behavior references (anthropomorphic/non-anthropomorphic) and taxonomic groups featured in the examples given by an undergraduate biology instructor during a semester-long course. It is reported that instruction was dominated by anthropomorphic examples of mammals and birds. Further, these dominant examples were found to bias the conceptual knowledge acquired by students who showed a tendency to conceive of nonhuman conduct in terms of mammalian and avian action. It is argued that extending biological exemplification practices beyond mammals and birds is essential to help students develop deep conceptual knowledge and an unbiased appreciation of life.