This collection investigates the historical development and functional evolution of animal behavior through a curated selection of foundational scientific literature. Editors Peter Klopfer and Jack P. Hailman assemble a series of seminal essays and empirical studies to provide students and researchers with direct access to the primary texts that shaped the field of ethology. By organizing these papers, the authors establish a framework for understanding how behavioral patterns are selected and how they have evolved over time within various species.

Experts recognize this volume as a practical archival tool for academic institutions lacking comprehensive access to historical scientific journals. Readers frequently note the academic density of the prose, which serves as a foundational reference for students specializing in behavioral biology.