a film by Lorenz Knauer ; a NEOS Film GmbH and Co. KG, CC Medienproduktion GmbH & Co. KG, Sphinx Media GbR production in association with Animal Planet [and others] ; produced by Philipp Schall, Philipp Wundt, Michael Halberstadt ; written and directed by Lorenz Knauer
Yellow Pad Productions presents ; in association with Icon TMI ; a Duane Baughman film ; produced by Mark Siegel ; produced by Duane Baughman, Arleen Sorkin ; written by Johnny O'Hara ; directed by Duane Baughman & Johnny O'Hara ; producer, Amy Berg
a production of Quest Productions, Bread and Butter Films ; in association with Thirteen's American Masters for WNET.org and Catticus Corp. ; produced by Jason Cohn & Bill Jersey ; narration written by Jason Cohn