One of the easiest ways to tell what animal group a bug belongs in is to count its legs. However, there are many other interesting bug body parts that give clues as to what kind of living thing it is. Readers learn all about insects and arachnids in a fun format in which they're shown a close-up photograph and given a few facts about the pictured creature. The answer is revealed on the following pages. Wings, legs, mouths, and exoskeletons are shown in full-color and complemented by science text hinting at what awaits readers when they turn the page.