87 pages matching editions:ISBN0023611405 in this book
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active adult aggression animals apes apparently attack baboons baby behavior birds birth body branches breeding calls carry cent Chapter child chimpanzees chimps close colobus communication competition Courtesy depends dominance effect energy environment experiments face feeding females FIGURE five foraging forest four fruit gibbon give gorilla grooming guenon hand howlers human important increased individual infants language langur larger learning least leaves lemurs less live look macaques males mammals mate mature means monkeys months mother move objects observed offspring particular patterns perhaps period play population predators primates probably problems range rare reach relatively rhesus season seems selection sexual share signs social sometimes species stage structure TABLE territorial tion tool tree troop turn usually weight whole wild young