Waal, F. B. M. de 1948- Mama's last hug : animal emotions and what they tell us about ourselves / Frans de Waal ; with photographs and drawings by the author. - First edition. - pages cm Includes bibliographical references and index. ISBN: 9780393635065 (hardcover) LCCN: 2018047218 Subjects--Topical Terms: Emotions in animals.Chimpanzees--Behavior. LC Class. No.: QL785.27 / .W33 2019 Dewey Class. No.: 599.885/15