Part of the "Look Once, Look Again" series, this title introduces the variety of feathers or fur that appear in yellow warblers, porcupines, skunk, white-tailed deer, flying squirrels, owl, and Dalmatians, and it also discusses the way that such coverings protect and signal in the animal world. In a guessing-game format, each right-hand page introduces a feature with a single sentence clue, and the back of the page gives several sentences more while a second photography puts the feature in a larger context. Photographs are clean, clear, and well chosen. Extensive back matter includes a review identification quiz; a glossary of approximately fifteen words; activities which imply curriculum or adult supervision; a section on further study (with about half the recommended books selected from this publisher), and an index. A good discussion starter for animal study.