This work investigates the complex behavioral and emotional dynamics involved in raising an orphaned lioness and successfully reintroducing her into the wild. Joy Adamson, a naturalist and conservationist, documents her personal experience living in Kenya with Elsa, a lioness cub. The narrative serves as both a detailed case study of animal behavior and a foundational argument for the feasibility of rehabilitating captive-raised predators for life in their natural habitat.

The text is widely regarded as a seminal contribution to the literature of wildlife conservation and human-animal interaction. Its clinical yet intimate documentation of Elsa's development provides a significant reference point for subsequent studies in animal rehabilitation and ethology.