This book investigates the critical status of various animal species currently facing extinction and the environmental factors contributing to their decline. The authors, Andy Hopkins and Joc Potter, utilize accessible language and structured educational formatting to present complex ecological data to students learning English. The text serves as an informative resource designed to raise awareness about biodiversity loss while simultaneously functioning as a pedagogical tool for language acquisition.

Educators frequently utilize this text as a foundational resource for English language learners due to its controlled vocabulary and clear, concise prose. Experts highlight the series for its ability to balance factual scientific content with appropriate linguistic scaffolding for students at the Stage 1 proficiency level.