a Marathon/France 2 coproduction with the participation of Le Centre National de la Cinematographie, Discovery Communications, Inc. and TSR ; a film written and directed by Jean Yves Collet ; produced by Olivier Bremond, Pascal Breton
a presentation of Science Museum of Minnesota, Science North and Discovery Place in cooperation with the Jane Goodall Institute with funding from Bank of America and National Science Foundation ; producer, David Lickley ; writer, Stephen Low ; director, David Lickley
produced in partnership by Wisconsin Dept. of Natural Resources Fisheries Management & Water Resources Mgmt. ; a video production of Wisconsin Dept. of Natural Resources Bureau of Information and Education
from Department of Agricultural Journalism College of Agricultural & Life Sciences University of Wisconsin--Madison ; filmmaker, Wolfgang Hoffmann ; writers, Bill Keenan, Michael Major