This book investigates the ecological and evolutionary drivers of cannibalism, challenging the traditional view that such behavior is merely an abnormal or infrequent occurrence. Bernard J. Crespi synthesizes theoretical frameworks from foraging ecology, sociality, and genetics to demonstrate that cannibalism is a widespread, functional behavior with significant consequences for life history and population dynamics across a vast array of species.

Experts recognize this work as a comprehensive synthesis that successfully integrates disparate biological studies into a unified evolutionary context. Readers frequently note the academic density of the prose, which serves as a foundational text for researchers and students interested in behavioral ecology and evolutionary biology.