Explains how animals team up and help one another with obtaining food and protecting their territories and their young from enemies, and how man and other creatures get help, direct or indirect, from creatures such as the beetle, bumblebee, earthworm, ant, gull, and caterpillar.

Presents one hundred facts about insects and spiders, covering eating habits, defense mechanisms, movement, and other topics, and includes illustrations, puzzles, quizzes, and projects.