| Preface | p. ix |
| Acknowledgments | p. xi |
| Introduction | p. xiii |
| Primates in General | |
| What Are Primates? | p. 1 |
| How Are Primates Classified? | p. 1 |
| What Are the Different Types of Primate? | p. 4 |
| What Makes a Primate a Primate? | p. 36 |
| Are Monkeys and Apes the Same Thing? | p. 42 |
| How Do Primates Move? | p. 45 |
| How Closely Are Humans Related to Other Primates? | p. 52 |
| Did Humans Evolve from Apes? | p. 54 |
| Will Chimpanzees Evolve into Humans? | p. 56 |
| What Are the Smallest and Largest Primates? | p. 57 |
| What Do Primates Eat? | p. 59 |
| Do All Primates Have Tails? | p. 61 |
| How Long Do Primates Live? | p. 65 |
| Which Primates Are the Fastest? | p. 66 |
| How Strong Is a Gorilla? | p. 67 |
| Primate Social Behavior | |
| Do All Primates Live in Families? | p. 71 |
| Why Do Primates Live in Different Types of Groups? | p. 72 |
| Are Primates Monogamous? | p. 75 |
| Do All Primates Recognize Their Relatives, and Does This Influence Their Society? | p. 77 |
| How Does Body Size Affect the Lives of Primates? | p. 79 |
| How Long Do Babies Stay with Their Mothers? | p. 81 |
| Do Mothers Have Help in Raising Their Babies? | p. 83 |
| Do Monkeys and Apes Experience Adolescence? | p. 86 |
| Why Do Some Primates Have Swollen Rears? | p. 88 |
| When Do Primates Mate? | p. 90 |
| Do Males or Females Initiate Mating? | p. 91 |
| Will Primates Adopt a Baby? | p. 93 |
| How Have Ideas about Primates Changed? | p. 96 |
| Why Do Primates Spend So Much Time Grooming? | p. 97 |
| Which Primates Hunt for Meat? | p. 100 |
| Do All Primates Have Friends? | p. 102 |
| Do Primates "Make Up" after a Fight? | p. 103 |
| Do Primates Make Good Pets? | p. 105 |
| Primate Intelligence | |
| How Smart Are Primates? | p. 109 |
| How Do Scientists Study Primate Intelligence? | p. 109 |
| When Was Primate Intelligence First Studied? | p. 111 |
| What Is the Average IQ for an Ape? | p. 114 |
| Do Primates Have Big Brains? | p. 116 |
| Do Nonhuman Primates Use Tools? | p. 118 |
| Do Nonhuman Primates Make Tools? | p. 120 |
| How Do Primates Communicate? | p. 124 |
| Do All Primates Have Their Own Languages? | p. 127 |
| Can Nonhuman Primates Learn a Language? | p. 128 |
| Why Can't Apes Talk? | p. 131 |
| Can Monkeys and Apes Count? | p. 132 |
| Do Nonhuman Primates Make Up New Ways to Solve Problems? | p. 134 |
| How Do Primates Learn from Each Other? | p. 136 |
| Which Primates Have Culture? | p. 139 |
| Are Humans the Only Deceptive Primate? | p. 142 |
| Are All Primates Sympathetic? | p. 145 |
| Which Primates Have Emotions? | p. 146 |
| Primate Conservation | |
| How Many Species of Primate Are Threatened or Endangered in the Wild? | p. 151 |
| What Are the Main Threats to Primates in the Wild? | p. 153 |
| What Are the Best Ways to Save Primates in the Wild? | p. 157 |
| Who Is Working to Protect Primates? | p. 158 |
| Are Captive Primates in Trouble? | p. 161 |
| How Can I Get Involved? | p. 163 |
| Taxonomic Hierarchy of Primates | p. 165 |
| Glossary | p. 175 |
| References | p. 179 |
| Taxonomic Index | p. 191 |
| Subject Index | p. 193 |
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