The world's animal populations face unprecedented threats due to human activity. The book details how human actions, from habitat destruction and pollution to hunting for skins and medicine, endanger approximately 40,000 animal species. It poses the critical question of what can be done to protect these animals from humanity itself, highlighting the urgent need for conservation efforts.

This book, part of the Oxford Bookworms Library Factfiles Level 1 series, is designed as an accessible introduction to the critical issue of animal endangerment. The content focuses on clearly explaining the threats animals face from human actions and prompts readers to consider conservation. The series' level suggests a straightforward presentation of facts and concepts suitable for learners.