books.google.com - Bringing together studies of behavioral variation within and among chimpanzees and bonobos - the sibling species of the genus Pan - this book provides the basis for answering such questions. In Chimpanzee Cultures, the world's leading authorities on chimpanzees and bonobos compare the animals' behaviors...http://books.google.com/books/about/Chimpanzee_Cultures.html?id=IzBIHPeE45IC&utm_source=gb-gplus-shareChimpanzee Cultures
