Stephen O. MacDonald is a curator in the mammals division at the Museum of Southwestern Biology.

Joseph A. Cook is professor of biology at the University of New Mexico and curator of mammals at the Museum of Southwestern Biology.

From the polar bear and the gray wolf to the walrus and the river otter, there are 115 species of mammals in Alaska that have never been fully catalogued until now. Biologists Stephen O. MacDonald and Joseph A. Cook have compiled here the first comprehensive guide to all of Alaska's mammals, big and small, endearing and ferocious.

Through extensive fieldwork and research, the authors have produced a unique and authoritative reference. Detailed entries for each species include distribution and taxonomic information, status, habitat, and fossil history. Appendices include quick reference listings of mammal distribution by region, specimen locations, conservation status, and the incidence of Pleistocene mammals. The guide is generously illustrated with line drawings by Alaska artist W. D. Berry and includes maps indicating populations and locations of species.