This book investigates the core question of whether grief should be categorized as a psychiatric disorder or understood as a natural, evolved reaction to loss. John E. Archer, a scholar in the field of psychology, challenges the prevailing medicalization of bereavement by synthesizing evidence from evolutionary psychology, ethology, and experimental psychology. He argues that grief is a functional, adaptive response to various types of loss, including the death of pets, rather than an illness requiring a cure.

Experts and clinicians recognize this work as a significant contribution to the study of bereavement, particularly for its departure from traditional medical models. Readers frequently note the academic rigor of the text, making it a foundational resource for professionals in psychology and the caring fields.