Truth in advertising. A review of advances in the study of mammalian behavior, edited by John F. Eisenberg and Devra G. Kleiman. Special Publication No. 7, The American Society of Mammalogists, 1983, 753 pp, $45.00. (Order from ASM Secretary‐Treasurer, Gordon L. Kirkland, Jr., Vertebrate Museum, Shippensburg State College, Shippensburg, PA 17257.)