This volume in the Rookie Read-About Science Strange Animals series focuses on mammals. Aims to introduce children to different animal groups by focusing on the more wild looking and recognizable species. There is a balance between light text that touts wondrous abilities and more formal fact-driven text. Each title emphasizes basic abilities such as survival and hunting techniques, with a few bits about parenting.Back matter includes a "Which Is Stranger?" matchup, "Top Five Facts," "Record Holders," and "Animal Crack-ups," which leaves readers with two kid-friendly jokes. Pronunciation guides accompany larger vocabulary works throughout each volume.