A production of the Media & Policy Center Foundation ; directed by Harry Wiland & Dale Bell ; producers, Beverly Baroff, David Rosenstein, Charla Barker, Stacy Sinclair-Tarr
Discovery presents ; a film by Natural Resources Defense Council and Imaginary Forces ; in association with International Fund for Animal Welfare and Diamond Docs ; directed by Michelle Dougherty, Daniel Hinerfeld ; produced by Daniel Hinerfeld, Michelle Dougherty ; written by Mark Monroe
Tecolote Films, Piano ; un documental de Eugenio Polgovsky ; dirección, fotografía, edición y diseño de sonido, Eugenio Polgovsky ; productores, Julio Chavezmontes, Eugenio Polgovsky