(3) 4-6 While many American animals are endangered, the seven profiled here have come back from the brink of extinction. Each chapter discusses the reason for the species' decline and the efforts that resulted in rising numbers; a final chapter suggests actions to help endangered wildlife. Plenty of photos illustrate the clear text, and sidebars provide additional information about related topics and "eco-heroes." Reading list, websites. Bib., glos., ind.

Reviewer: Janet Dawson

(3) YA Castaldo explores the scientific evidence for animal intelligence, emotions, and communication--from early observational studies to contemporary experiments that show the cognitive capabilities of monkeys, dogs, dolphins, and crows. The ethics of animal-human interactions are also considered. The well-chosen photographs include close-ups that capture emotive facial expressions and action shots of behaviors that reveal thought processes. Reading list, websites. Bib., glos., ind.

Reviewer: Danielle J. Ford

(3) 4-6 Castaldo offers a matter-of-fact overview of the ways in which dogs, and their highly developed sense of smell, aid humans by detecting bombs, cadavers, illegal drugs, and more. Anatomical information about dogs and their senses is exceptionally clear. Photographs of the real-life canine heroes discussed add a personal and endearing touch. Reading list, websites. Bib., glos., ind.

Reviewer: Betty Carter

(4) 4-6 National Geographic Kids Mission series. These comprehensive introductions feature facts about the titular animal, anecdotes about individuals, updates from scientists working in the field, and challenges to species survival. Each chapter ends with "rescue activities," ranging from simple energy-saving suggestions to specific ways to help these animals to vague political actions. Excellent photos are eye-catching, but the page design is busy. Reading list, websites. Ind. Review covers the following titles: Mission: Elephant Rescue and Mission: Polar Bear Rescue.

Reviewer: Grace Worcester Greene