Incorporating essential revisions to reflect the latest scientific advancements, a celebrated author and scientist offers a leading textbook on animal behavior. So much has happened in the field of animal behavior since the last edition of this definitive textbook was published in 2020. In this fifth edition, Lee Alan Dugatkin continues to draw on cutting-edge new research not only to update and expand on the studies presented, but also to reinforce the previous editions- focus on ultimate and proximate causation, as well as the book-s unique emphasis on natural selection, learning, and cultural transmission in nonhuman animals. The result is an essential update on the leading textbook on animal behavior that explains underlying concepts accessibly and with scientific rigor. Completely new features include: Anthropogenic Connection Boxes. Humans are changing the planet. We are clearing forests, polluting the oceans, irrigating deserts, poisoning the soils, and driving a dramatic increa